b43: N-PHY: save calibration for further restore

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_n.h

@@ -975,6 +975,7 @@ struct b43_phy_n {
 	u16 papd_epsilon_offset[2];
 	s32 preamble_override;
 	u32 bb_mult_save;
+	u16 radio_chanspec;
 
 	bool gain_boost;
 	bool elna_gain_config;