IntelFrameworkModulePkg: Put report status code after event was signaled per PI spec.

IntelFrameworkModulePkg: Put report status code after event was signaled per PI spec.

For PI spec vol3,
"EFI_SW_DXE_BS_PC_LEGACY_BOOT_EVENT   The event with GUID EFI_EVENT_LEGACY_BOOT_GUID was signaled."
"EFI_SW_DXE_BS_PC_READY_TO_BOOT_EVENT The EFI_EVENT_GROUP_READY_TO_BOOT event was signaled."
However, in current code base, they are reported before events were signaled.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17124 6f19259b-4bc3-4df7-8a09-765794883524