Detect some unsupported cases when save boot script, then return error early.

Detect some unsupported cases when save boot script, then return error early.
1. PciCfg Read/Write doesn't support UINT64 width.
2. PciCfg2 Segment must be zero.

Move CheckParameters () to BootScriptSave.c to check parameter early.
Add code for EfiSmbusBWBRProcessCall operation, and let the SmbusLib instance to decide if it is supported or not.

Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14018 6f19259b-4bc3-4df7-8a09-765794883524