src: Change BOOL CONFIG_ to CONFIG() in comments & strings

The Kconfig lint tool checks for cases of the code using BOOL type
Kconfig options directly instead of with CONFIG() and will print out
warnings about it.  It gets confused by these references in comments
and strings.  To fix it so that it can find the real issues, just
update these as we would with real issues.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: I5c37f0ee103721c97483d07a368c0b813e3f25c0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43824
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/include/mrc_cache.h

@@ -14,7 +14,7 @@ enum {
 
 /*
  * It's up to the caller to decide when to retrieve and stash data. There is
- * differentiation on recovery mode CONFIG_HAS_RECOVERY_MRC_CACHE, but that's
+ * differentiation on recovery mode CONFIG(HAS_RECOVERY_MRC_CACHE), but that's
  * only for locating where to retrieve and save the data. If a platform doesn't
  * want to update the data then it shouldn't stash the data for saving.
  * Similarly, if the platform doesn't need the data for booting because of a