This PR backports 3 commits:
020cc9e2e705 OvmfPkg: Disable PcdFirstTimeWakeUpAPsBySipi
8b66f9df1bb0 OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipi
f008890ae559 OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure during boot
from upstream to fix the regression of boot failure on OvmfPkg/AmdSev
Signed-off-by: hanliyang <hanliyang@hygon.cn>
