cpu/mtrr.h: Fix macro names for MTRR registers

We use UNDERSCORE_CASE. For the MTRR macros that refer to an MSR,
we also remove the _MSR suffix, as they are, by definition, MSRs.

Change-Id: Id4483a75d62cf1b478a9105ee98a8f55140ce0ef
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/11761
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
47 files changed