util/*: more typo fixes

Found by: util/lint/checkpatch.pl --types TYPO_SPELLING --fix-inplace
--strict --terse -f $(find util -name '*.[ch]')

Change-Id: I059071fd3a2edb41c72fc57fccbb520bd2ebb757
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38651
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

util/cbmem/cbmem.c

@@ -258,7 +258,7 @@ static int find_cbmem_entry(uint32_t id, uint64_t *addr, size_t *size)
  * passed in memory offset.  Could be called recursively in case a forwarding
  * entry is found.
  *
- * Returns pointer to a memory buffer containg the timestamp table or zero if
+ * Returns pointer to a memory buffer containing the timestamp table or zero if
  * none found.
  */