AMD S3 resume: use a function to replace duplicated code

In function OemAgesaSaveMtrr of 'src/cpu/amd/agesa/s3_resume.c',
there are many code like this:
  msr_data = rdmsr(0x258);
  flash->write(flash, nvram_pos, 4, &msr_data.lo);
  nvram_pos += 4;
  flash->write(flash, nvram_pos, 4, &msr_data.hi);
  nvram_pos += 4;
Add a function write_mtrr to do this.

Change-Id: Id6464e637db1758b07ac2d79d3be1375a8d49651
Signed-off-by: Siyuan Wang <SiYuan.Wang@amd.com>
Signed-off-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-on: http://review.coreboot.org/3410
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2 files changed