clang-format: Update to match docs repo

Update the .clang-format file and run clang-format-6.0.
This .clang-format matches the example one in
https://github.com/openbmc/docs/blob/master/cpp-style-and-conventions.md#clang-formatting

Change-Id: Ic2c462525eb27b8295c2b298871e04268d93faf2
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/bmc_epoch.hpp b/bmc_epoch.hpp
index 228a39d..96c14b7 100644
--- a/bmc_epoch.hpp
+++ b/bmc_epoch.hpp
@@ -19,75 +19,74 @@
  */
 class BmcEpoch : public EpochBase
 {
-    public:
-        friend class TestBmcEpoch;
-        BmcEpoch(sdbusplus::bus::bus& bus,
-                 const char* objPath);
-        ~BmcEpoch();
+  public:
+    friend class TestBmcEpoch;
+    BmcEpoch(sdbusplus::bus::bus& bus, const char* objPath);
+    ~BmcEpoch();
 
-        /**
-         * @brief Get value of Elapsed property
-         *
-         * @return The elapsed microseconds since UTC
-         **/
-        uint64_t elapsed() const override;
+    /**
+     * @brief Get value of Elapsed property
+     *
+     * @return The elapsed microseconds since UTC
+     **/
+    uint64_t elapsed() const override;
 
-        /**
-         * @brief Set value of Elapsed property
-         *
-         * @param[in] value - The microseconds since UTC to set
-         * @return The updated elapsed microseconds since UTC
-         **/
-        uint64_t elapsed(uint64_t value) override;
+    /**
+     * @brief Set value of Elapsed property
+     *
+     * @param[in] value - The microseconds since UTC to set
+     * @return The updated elapsed microseconds since UTC
+     **/
+    uint64_t elapsed(uint64_t value) override;
 
-        /** @brief Set the listner for bmc time change
-         *
-         * @param[in] listener - The pointer to the listener
-         */
-        void setBmcTimeChangeListener(BmcTimeChangeListener* listener);
+    /** @brief Set the listner for bmc time change
+     *
+     * @param[in] listener - The pointer to the listener
+     */
+    void setBmcTimeChangeListener(BmcTimeChangeListener* listener);
 
-    private:
-        /** @brief The fd for time change event */
-        int timeFd = -1;
+  private:
+    /** @brief The fd for time change event */
+    int timeFd = -1;
 
-        /** @brief Initialize timerFd related resource */
-        void initialize();
+    /** @brief Initialize timerFd related resource */
+    void initialize();
 
-        /** @brief Notify the listeners that bmc time is changed
-         *
-         * @param[in] time - The epoch time in microseconds to notify
-         */
-        void notifyBmcTimeChange(const microseconds& time);
+    /** @brief Notify the listeners that bmc time is changed
+     *
+     * @param[in] time - The epoch time in microseconds to notify
+     */
+    void notifyBmcTimeChange(const microseconds& time);
 
-        /** @brief The callback function on system time change
-         *
-         * @param[in] es - Source of the event
-         * @param[in] fd - File descriptor of the timer
-         * @param[in] revents - Not used
-         * @param[in] userdata - User data pointer
-         */
-        static int onTimeChange(sd_event_source* es, int fd,
-                                uint32_t revents, void* userdata);
+    /** @brief The callback function on system time change
+     *
+     * @param[in] es - Source of the event
+     * @param[in] fd - File descriptor of the timer
+     * @param[in] revents - Not used
+     * @param[in] userdata - User data pointer
+     */
+    static int onTimeChange(sd_event_source* es, int fd, uint32_t revents,
+                            void* userdata);
 
-        /** @brief The reference of sdbusplus bus */
-        sdbusplus::bus::bus& bus;
+    /** @brief The reference of sdbusplus bus */
+    sdbusplus::bus::bus& bus;
 
-        /** @brief The deleter of sd_event_source */
-        std::function<void(sd_event_source*)> sdEventSourceDeleter =
-            [] (sd_event_source* p) {
-                if (p)
-                {
-                    sd_event_source_unref(p);
-                }
-            };
-        using SdEventSource = std::unique_ptr<sd_event_source,
-                                              decltype(sdEventSourceDeleter)>;
+    /** @brief The deleter of sd_event_source */
+    std::function<void(sd_event_source*)> sdEventSourceDeleter =
+        [](sd_event_source* p) {
+            if (p)
+            {
+                sd_event_source_unref(p);
+            }
+        };
+    using SdEventSource =
+        std::unique_ptr<sd_event_source, decltype(sdEventSourceDeleter)>;
 
-        /** @brief The event source on system time change */
-        SdEventSource timeChangeEventSource {nullptr, sdEventSourceDeleter};
+    /** @brief The event source on system time change */
+    SdEventSource timeChangeEventSource{nullptr, sdEventSourceDeleter};
 
-        /** @brief The listener for bmc time change */
-        BmcTimeChangeListener* timeChangeListener = nullptr;
+    /** @brief The listener for bmc time change */
+    BmcTimeChangeListener* timeChangeListener = nullptr;
 };
 
 } // namespace time