iwlwifi: fix various spelling and typos

Fixing various spelling errors and typos. Mostly in comments. In total
27 words were corrected, some of which occurred more than ones.

Signed-Of-By: Ian Schram <ischram@telenet.be>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index ea7f459..a6cb97a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -362,7 +362,7 @@
 	return local->hw.priv;
 }
 
-/* rate scale requires free function to be implmented */
+/* rate scale requires free function to be implemented */
 static void rs_free(void *priv)
 {
 	return;
@@ -568,7 +568,7 @@
 	u8 high = IWL_RATE_INVALID;
 	u8 low = IWL_RATE_INVALID;
 
-	/* 802.11A walks to the next literal adjascent rate in
+	/* 802.11A walks to the next literal adjacent rate in
 	 * the rate table */
 	if (unlikely(phymode == MODE_IEEE80211A)) {
 		int i;