Add stub for x86 & x86_64.

Add stub support for x86, this will be used in x86 & x86_64 RS relocation.

Change-Id: Id5d1cc0679b43348a4f66707c21c6bdf85a3a7e4
Signed-off-by: Xiaofei Wan <xiaofei.wan@intel.com>
3 files changed