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/power-sequencer/mihawk-cpld.cpp b/power-sequencer/mihawk-cpld.cpp
index 0e0744a..4a7735d 100644
--- a/power-sequencer/mihawk-cpld.cpp
+++ b/power-sequencer/mihawk-cpld.cpp
@@ -53,8 +53,7 @@
 
 MihawkCPLD::MihawkCPLD(size_t instance, sdbusplus::bus::bus& bus) :
     Device(DEVICE_NAME, instance), bus(bus)
-{
-}
+{}
 
 void MihawkCPLD::onFailure()
 {