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/host_epoch.hpp b/host_epoch.hpp
index 1eb3167..bbf9d22 100644
--- a/host_epoch.hpp
+++ b/host_epoch.hpp
@@ -1,7 +1,8 @@
 #pragma once
 
-#include "bmc_time_change_listener.hpp"
 #include "config.h"
+
+#include "bmc_time_change_listener.hpp"
 #include "epoch_base.hpp"
 
 #include <chrono>
@@ -18,56 +19,54 @@
  */
 class HostEpoch : public EpochBase, public BmcTimeChangeListener
 {
-    public:
-        friend class TestHostEpoch;
-        HostEpoch(sdbusplus::bus::bus& bus,
-                  const char* objPath);
+  public:
+    friend class TestHostEpoch;
+    HostEpoch(sdbusplus::bus::bus& bus, const char* objPath);
 
-        /**
-         * @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 Notified on time owner changed */
-        void onOwnerChanged(Owner owner) override;
+    /** @brief Notified on time owner changed */
+    void onOwnerChanged(Owner owner) override;
 
-        /** @brief Notified on bmc time is changed
-         *
-         * @param[in] bmcTime - The epoch time in microseconds
-         */
-        void onBmcTimeChanged(
-            const std::chrono::microseconds& bmcTime) override;
+    /** @brief Notified on bmc time is changed
+     *
+     * @param[in] bmcTime - The epoch time in microseconds
+     */
+    void onBmcTimeChanged(const std::chrono::microseconds& bmcTime) override;
 
-    private:
-        /** @brief The diff between BMC and Host time */
-        std::chrono::microseconds offset;
+  private:
+    /** @brief The diff between BMC and Host time */
+    std::chrono::microseconds offset;
 
-        /**
-         * @brief The diff between host time and steady clock
-         * @details This diff is used to calculate the host time if BMC time
-         * is changed and the owner is SPLIT.
-         * Without this the host time is lost if BMC time is changed.
-        */
-        std::chrono::microseconds diffToSteadyClock;
+    /**
+     * @brief The diff between host time and steady clock
+     * @details This diff is used to calculate the host time if BMC time
+     * is changed and the owner is SPLIT.
+     * Without this the host time is lost if BMC time is changed.
+     */
+    std::chrono::microseconds diffToSteadyClock;
 
-        /** @brief Save the offset value into offsetFile */
-        void saveOffset();
+    /** @brief Save the offset value into offsetFile */
+    void saveOffset();
 
-        /** @brief The file to store the offset in File System.
-         *  Read back when starts
-         **/
-        static constexpr auto offsetFile = HOST_OFFSET_FILE;
+    /** @brief The file to store the offset in File System.
+     *  Read back when starts
+     **/
+    static constexpr auto offsetFile = HOST_OFFSET_FILE;
 };
 
 } // namespace time