ath9k: move spectral_mode to ath_spec_scan_priv

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/spectral.h b/drivers/net/wireless/ath/ath9k/spectral.h
index 533d8a1..0acdc43 100644
--- a/drivers/net/wireless/ath/ath9k/spectral.h
+++ b/drivers/net/wireless/ath/ath9k/spectral.h
@@ -94,6 +94,7 @@
 
 struct ath_spec_scan_priv {
 	struct rchan *rfs_chan_spec_scan;
+	enum spectral_mode spectral_mode;
 };
 
 #define SPECTRAL_HT20_40_TOTAL_DATA_LEN	(sizeof(struct ath_ht20_40_fft_packet))