ath6kl: Remove old 802.11a-only channels

Channels 34/38/42/46 can only be used for compatibility with old devices sold
in Japan. Modern products, such as AR6003/AR6004 don't support these channels.
Keeping them in the upstream is error prone and requires full network stack
support. A custom patch should be used in case such compatibility is required.

Without this one, a user is able to start an AP using wpa_supplicant,
for example, on one of these channels (34/38/42/46), without getting
any warning/error from the cfg80211 or ath6kl - which is correct
(since these channels match regdom rules). However, the AR6003 and its
firmware (we're using v3.4.0.225) will fail and return
"WMI_CMDERROR_EVENTID" with "INVALID_PARAM" error code.
Signed-off-by: Rostyslav Khudolii <rkhudolii@airtame.com>
Cc: Attila Sukosd <attila@airtame.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/cfg80211.c

@@ -102,10 +102,8 @@ static struct ieee80211_channel ath6kl_2ghz_channels[] = {
 };
 
 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
-	CHAN5G(34, 0), CHAN5G(36, 0),
-	CHAN5G(38, 0), CHAN5G(40, 0),
-	CHAN5G(42, 0), CHAN5G(44, 0),
-	CHAN5G(46, 0), CHAN5G(48, 0),
+	CHAN5G(36, 0), CHAN5G(40, 0),
+	CHAN5G(44, 0), CHAN5G(48, 0),
 	CHAN5G(52, 0), CHAN5G(56, 0),
 	CHAN5G(60, 0), CHAN5G(64, 0),
 	CHAN5G(100, 0), CHAN5G(104, 0),