Follow UEFI2.4.a spec, add more description on parameter check.
Follow UEFI2.4.a spec, add more description on parameter check.

Signed-off by: jiewen yao <jiewen.yao@intel.com>
Reviewed by: qin long <qin.long@intel.com>

git-svn-id: 3158a46dfd52e07d1fda3e32e1ab2e353a00b20f@15127 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2