selinux: const strings in tables

Several places strings tables are used that should be declared
const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index f036672..6236198 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -40,7 +40,7 @@
 #define _DEBUG_HASHES
 
 #ifdef DEBUG_HASHES
-static char *symtab_name[SYM_NUM] = {
+static const char *symtab_name[SYM_NUM] = {
 	"common prefixes",
 	"classes",
 	"roles",