Update clang-format

Refer:https://github.com/openbmc/docs/blob/ac5d544553934f8083c61c5986a1420261bc8a4c/style/cpp/.clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I593ddf950d14009ab77251fd6d3f248214661765
diff --git a/src/button_handler.cpp b/src/button_handler.cpp
index 55f5db5..a819183 100644
--- a/src/button_handler.cpp
+++ b/src/button_handler.cpp
@@ -196,7 +196,8 @@
 
     switch (powerEventType)
     {
-        case PowerEvent::powerPressed: {
+        case PowerEvent::powerPressed:
+        {
             objPathName = HOST_STATE_OBJECT_NAME + hostNumStr;
             dbusIfaceName = hostIface;
             transitionName = "RequestedHostTransition";
@@ -211,7 +212,8 @@
 
             break;
         }
-        case PowerEvent::longPowerPressed: {
+        case PowerEvent::longPowerPressed:
+        {
             dbusIfaceName = chassisIface;
             transitionName = "RequestedPowerTransition";
             objPathName = CHASSIS_STATE_OBJECT_NAME + hostNumStr;
@@ -244,8 +246,8 @@
             break;
         }
 
-        case PowerEvent::resetPressed: {
-
+        case PowerEvent::resetPressed:
+        {
             objPathName = HOST_STATE_OBJECT_NAME + hostNumStr;
             dbusIfaceName = hostIface;
             transitionName = "RequestedHostTransition";
@@ -260,7 +262,8 @@
             transition = Host::Transition::Reboot;
             break;
         }
-        default: {
+        default:
+        {
             log<level::ERR>(
                 "Invalid power event. skipping...",
                 entry("EVENT=%d", static_cast<int>(powerEventType)));
diff --git a/src/gpio.cpp b/src/gpio.cpp
index bb7f79b..86d4cec 100644
--- a/src/gpio.cpp
+++ b/src/gpio.cpp
@@ -21,12 +21,13 @@
 #include <fcntl.h>
 #include <unistd.h>
 
-#include <filesystem>
-#include <fstream>
 #include <gpioplus/utility/aspeed.hpp>
 #include <nlohmann/json.hpp>
 #include <phosphor-logging/log.hpp>
 
+#include <filesystem>
+#include <fstream>
+
 const std::string gpioDev = "/sys/class/gpio";
 
 using namespace phosphor::logging;
@@ -93,7 +94,6 @@
         result = configGpio(gpioCfg);
         if (result < 0)
         {
-
             std::string errorMsg =
                 "Error configuring gpio: GPIO_NUM=" +
                 std::to_string(gpioCfg.number) +
@@ -109,7 +109,6 @@
 
 int configGpio(gpioInfo& gpioConfig)
 {
-
     auto gpioNum = gpioConfig.number;
     auto gpioDirection = gpioConfig.direction;
 
diff --git a/src/main.cpp b/src/main.cpp
index e1efd3e..624c9e7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -17,9 +17,10 @@
 #include "button_factory.hpp"
 #include "gpio.hpp"
 
-#include <fstream>
 #include <nlohmann/json.hpp>
 #include <phosphor-logging/elog-errors.hpp>
+
+#include <fstream>
 static constexpr auto gpioDefFile = "/etc/default/obmc/gpio/gpio_defs.json";
 
 using namespace phosphor::logging;
diff --git a/src/power_button.cpp b/src/power_button.cpp
index 2e69154..2446d7b 100644
--- a/src/power_button.cpp
+++ b/src/power_button.cpp
@@ -41,7 +41,6 @@
 
 void PowerButton::handleEvent(sd_event_source* es, int fd, uint32_t revents)
 {
-
     int n = -1;
     char buf = '0';