nb/intel: Fix some spelling mistakes in comments and strings

Change-Id: I4a8297397d878e38516c8df19dd311c7ef19ec06
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17478
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/northbridge/intel/gm45/raminit.c

@@ -198,7 +198,7 @@ void get_gmch_info(sysinfo_t *sysinfo)
 /*
  * Detect if the system went through an interrupted RAM init or is incon-
  * sistent. If so, initiate a cold reboot. Otherwise mark the system to be
- * in RAM init, so this function would detect it on an erreneous reboot.
+ * in RAM init, so this function would detect it on an erroneous reboot.
  */
 void enter_raminit_or_reset(void)
 {