clang updates

The openbmc CI was recently updated to clang-12 which requires some
formatting updates to the code:
https://github.com/openbmc/openbmc-build-scripts/commit/4569bf49daaebff06be0482426908bb5497fad08

Make those updates and refresh the clang-format file with the one from
docs:
https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Change-Id: Ieb3626526373a053ec84431e7560003f229f338d
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/phosphor-power-sequencer/src/power_control.cpp b/phosphor-power-sequencer/src/power_control.cpp
index 0ce46b8..931142d 100644
--- a/phosphor-power-sequencer/src/power_control.cpp
+++ b/phosphor-power-sequencer/src/power_control.cpp
@@ -59,8 +59,7 @@
 }
 
 void PowerControl::pollPgood()
-{
-}
+{}
 
 void PowerControl::setPgoodTimeout(int t)
 {
diff --git a/phosphor-power-sequencer/src/power_interface.cpp b/phosphor-power-sequencer/src/power_interface.cpp
index ed537db..13d0af6 100644
--- a/phosphor-power-sequencer/src/power_interface.cpp
+++ b/phosphor-power-sequencer/src/power_interface.cpp
@@ -35,8 +35,7 @@
 
 PowerInterface::PowerInterface(sdbusplus::bus::bus& bus, const char* path) :
     _serverInterface(bus, path, POWER_IFACE, _vtable, this)
-{
-}
+{}
 
 int PowerInterface::callbackGetPgood(sd_bus* /*bus*/, const char* /*path*/,
                                      const char* /*interface*/,