mac80211: use AES_BLOCK_SIZE

mac80211 has a defnition of AES_BLOCK_SIZE and
multiple definitions of AES_BLOCK_LEN. Remove
them all and use crypto/aes.h.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 3452d5e..0168423 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -291,10 +291,10 @@
 	unsigned int hdrlen;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
-	memset(scratch, 0, 6 * AES_BLOCK_LEN);
+	memset(scratch, 0, 6 * AES_BLOCK_SIZE);
 
-	b_0 = scratch + 3 * AES_BLOCK_LEN;
-	aad = scratch + 4 * AES_BLOCK_LEN;
+	b_0 = scratch + 3 * AES_BLOCK_SIZE;
+	aad = scratch + 4 * AES_BLOCK_SIZE;
 
 	/*
 	 * Mask FC: zero subtype b4 b5 b6 (if not mgmt)
@@ -386,7 +386,7 @@
 	u8 *pos;
 	u8 pn[6];
 	u64 pn64;
-	u8 scratch[6 * AES_BLOCK_LEN];
+	u8 scratch[6 * AES_BLOCK_SIZE];
 
 	if (info->control.hw_key &&
 	    !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
@@ -487,7 +487,7 @@
 	}
 
 	if (!(status->flag & RX_FLAG_DECRYPTED)) {
-		u8 scratch[6 * AES_BLOCK_LEN];
+		u8 scratch[6 * AES_BLOCK_SIZE];
 		/* hardware didn't decrypt/verify MIC */
 		ccmp_special_blocks(skb, pn, scratch, 1);