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)
diff --git a/src/soc/intel/baytrail/bootblock/bootblock.c b/src/soc/intel/baytrail/bootblock/bootblock.c
index 6d31add..f73ac46 100644
--- a/src/soc/intel/baytrail/bootblock/bootblock.c
+++ b/src/soc/intel/baytrail/bootblock/bootblock.c
@@ -29,10 +29,10 @@
 	msr_t basem, maskm;
 	basem.lo = base | type;
 	basem.hi = 0;
-	wrmsr(MTRRphysBase_MSR(reg), basem);
-	maskm.lo = ~(size - 1) | MTRRphysMaskValid;
+	wrmsr(MTRR_PHYS_BASE(reg), basem);
+	maskm.lo = ~(size - 1) | MTRR_PHYS_MASK_VALID;
 	maskm.hi = (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1;
-	wrmsr(MTRRphysMask_MSR(reg), maskm);
+	wrmsr(MTRR_PHYS_MASK(reg), maskm);
 }
 
 static void enable_rom_caching(void)
@@ -47,7 +47,7 @@
 	/* Enable Variable MTRRs */
 	msr.hi = 0x00000000;
 	msr.lo = 0x00000800;
-	wrmsr(MTRRdefType_MSR, msr);
+	wrmsr(MTRR_DEF_TYPE_MSR, msr);
 }
 
 static void setup_mmconfig(void)