security: constify some arrays in lockdown LSM

No reason for these not to be const.
Signed-off-by: Matthew Garrett <mjg59@google.com>
Suggested-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

security/lockdown/lockdown.c

@@ -16,7 +16,7 @@
 
 static enum lockdown_reason kernel_locked_down;
 
-static char *lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
+static const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
 	[LOCKDOWN_NONE] = "none",
 	[LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading",
 	[LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port",
@@ -40,7 +40,7 @@ static char *lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
 	[LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality",
 };
 
-static enum lockdown_reason lockdown_levels[] = {LOCKDOWN_NONE,
+static const enum lockdown_reason lockdown_levels[] = {LOCKDOWN_NONE,
 						 LOCKDOWN_INTEGRITY_MAX,
 						 LOCKDOWN_CONFIDENTIALITY_MAX};