ath9k: add a debugfs entry for ignoring CCA on the extension channel in HT40

Debugfs requires a u32 for bool knobs though so we turn the
ath9k_hw knob into a u32 as well.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/debug.c

@@ -956,6 +956,10 @@ int ath9k_init_debug(struct ath_hw *ah)
 			sc->debug.debugfs_phy, sc, &fops_regval))
 		goto err;
 
+	if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
+			sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca))
+		goto err;
+
 	sc->debug.regidx = 0;
 	return 0;
 err:

drivers/net/wireless/ath/ath9k/hw.h

@@ -238,7 +238,7 @@ struct ath9k_ops_config {
 	int sw_beacon_response_time;
 	int additional_swba_backoff;
 	int ack_6mb;
-	int cwm_ignore_extcca;
+	u32 cwm_ignore_extcca;
 	u8 pcie_powersave_enable;
 	u8 pcie_clock_req;
 	u32 pcie_waen;