src/include: Capitalize CPU, RAM and ROM

Change-Id: Id40c1bf868820c77ea20146d19c6d552c2f970c4
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/15942
Tested-by: build bot (Jenkins)
Reviewed-by: Omar Pakker
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/include/cpu/x86/msr.h b/src/include/cpu/x86/msr.h
index d644edd..db35ef1 100644
--- a/src/include/cpu/x86/msr.h
+++ b/src/include/cpu/x86/msr.h
@@ -48,7 +48,7 @@
 
 /* The following functions require the always_inline due to AMD
  * function STOP_CAR_AND_CPU that disables cache as
- * ram, the cache as ram stack can no longer be used. Called
+ * RAM, the cache as RAM stack can no longer be used. Called
  * functions must be inlined to avoid stack usage. Also, the
  * compiler must keep local variables register based and not
  * allocated them from the stack. With gcc 4.5.0, some functions