PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c: rewrap code, strip trailing ws

PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c: rewrap code, strip trailing ws

In this patch the code and the comments embedded in code are rewrapped to
79 columns, plus any trailing whitespace is stripped.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17950 6f19259b-4bc3-4df7-8a09-765794883524