The PCI host bridge can signal failures in its initialization to
the PCI Bus driver through the function call NotifyPhase().

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/MdeModulePkg@14483 6f19259b-4bc3-4df7-8a09-765794883524