src/cpu: Fix spelling of MTTR to MTRR

Change-Id: Ia4718ac31a5b2bd12f8cda5e107aa878d74d2a03
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/4805
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c
index edb2e80..40a396d 100644
--- a/src/cpu/intel/haswell/romstage.c
+++ b/src/cpu/intel/haswell/romstage.c
@@ -108,18 +108,18 @@
 	 * of physical address bits. */
 	mtrr_mask_upper = (1 << ((cpuid_eax(0x80000008) & 0xff) - 32)) - 1;
 
-	/* The order for each MTTR is value then base with upper 32-bits of
+	/* The order for each MTRR is value then base with upper 32-bits of
 	 * each value coming before the lower 32-bits. The reasoning for
 	 * this ordering is to create a stack layout like the following:
 	 *   +0: Number of MTRRs
-	 *   +4: MTTR base 0 31:0
-	 *   +8: MTTR base 0 63:32
-	 *  +12: MTTR mask 0 31:0
-	 *  +16: MTTR mask 0 63:32
-	 *  +20: MTTR base 1 31:0
-	 *  +24: MTTR base 1 63:32
-	 *  +28: MTTR mask 1 31:0
-	 *  +32: MTTR mask 1 63:32
+	 *   +4: MTRR base 0 31:0
+	 *   +8: MTRR base 0 63:32
+	 *  +12: MTRR mask 0 31:0
+	 *  +16: MTRR mask 0 63:32
+	 *  +20: MTRR base 1 31:0
+	 *  +24: MTRR base 1 63:32
+	 *  +28: MTRR mask 1 31:0
+	 *  +32: MTRR mask 1 63:32
 	 */
 
 	/* Cache the ROM as WP just below 4GiB. */
@@ -158,7 +158,7 @@
 	slot = stack_push(slot, top_of_ram | MTRR_TYPE_WRBACK);
 	num_mtrrs++;
 
-	/* Save the number of MTTRs to setup. Return the stack location
+	/* Save the number of MTRRs to setup. Return the stack location
 	 * pointing to the number of MTRRs. */
 	slot = stack_push(slot, num_mtrrs);