netlabel: shorter names for the NetLabel catmap funcs/structs

Historically the NetLabel LSM secattr catmap functions and data
structures have had very long names which makes a mess of the NetLabel
code and anyone who uses NetLabel.  This patch renames the catmap
functions and structures from "*_secattr_catmap_*" to just "*_catmap_*"
which improves things greatly.

There are no substantial code or logic changes in this patch.

Signed-off-by: Paul Moore <pmoore@redhat.com>
Tested-by: Casey Schaufler <casey@schaufler-ca.com>
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 14f52be..c32bba5 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3091,9 +3091,9 @@
 				break;
 			}
 			for (acat = -1, kcat = -1; acat == kcat; ) {
-				acat = netlbl_secattr_catmap_walk(
-					sap->attr.mls.cat, acat + 1);
-				kcat = netlbl_secattr_catmap_walk(
+				acat = netlbl_catmap_walk(sap->attr.mls.cat,
+							  acat + 1);
+				kcat = netlbl_catmap_walk(
 					skp->smk_netlabel.attr.mls.cat,
 					kcat + 1);
 				if (acat < 0 || kcat < 0)