mac80211: add const, remove unused function, make one function static

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/michael.c b/net/mac80211/michael.c
index 4e151e0..1fcdf38 100644
--- a/net/mac80211/michael.c
+++ b/net/mac80211/michael.c
@@ -6,7 +6,6 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <asm/unaligned.h>
@@ -28,7 +27,7 @@
 }
 
 static void michael_mic_hdr(struct michael_mic_ctx *mctx,
-			    u8 *key, u8 *da, u8 *sa, u8 priority)
+			const u8 *key, const u8 *da, const u8 *sa, u8 priority)
 {
 	mctx->l = get_unaligned_le32(key);
 	mctx->r = get_unaligned_le32(key + 4);
@@ -44,8 +43,8 @@
 	michael_block(mctx, priority);
 }
 
-void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority,
-		 u8 *data, size_t data_len, u8 *mic)
+void michael_mic(const u8 *key, const u8 *da, const u8 *sa, u8 priority,
+		 const u8 *data, size_t data_len, u8 *mic)
 {
 	u32 val;
 	size_t block, blocks, left;