selinux: Change bool variable name to index.

security_get_bool_value(int bool) argument "bool" conflicts with
in-kernel macros such as BUILD_BUG().  This patch changes this to
index which isn't a type.

Cc: Paul Moore <paul@paul-moore.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Eric Paris <eparis@parisplace.org>
Cc: James Morris <james.l.morris@oracle.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andrew Perepechko <anserper@ya.ru>
Cc: Jeff Vander Stoep <jeffv@google.com>
Cc: selinux@tycho.nsa.gov
Cc: Eric Paris <eparis@redhat.com>
Cc: Paul Moore <pmoore@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
[PM: wrapped description for checkpatch.pl, use "selinux:..." as subj]
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/selinux/include/conditional.h

@@ -17,6 +17,6 @@ int security_get_bools(int *len, char ***names, int **values);
 
 int security_set_bools(int len, int *values);
 
-int security_get_bool_value(int bool);
+int security_get_bool_value(int index);
 
 #endif

security/selinux/ss/services.c

@@ -2696,7 +2696,7 @@ out:
 	return rc;
 }
 
-int security_get_bool_value(int bool)
+int security_get_bool_value(int index)
 {
 	int rc;
 	int len;
@@ -2705,10 +2705,10 @@ int security_get_bool_value(int bool)
 
 	rc = -EFAULT;
 	len = policydb.p_bools.nprim;
-	if (bool >= len)
+	if (index >= len)
 		goto out;
 
-	rc = policydb.bool_val_to_struct[bool]->state;
+	rc = policydb.bool_val_to_struct[index]->state;
 out:
 	read_unlock(&policy_rwlock);
 	return rc;