b43: Fix LO calibration txctl reg value

This patch expands the parenthesis in the txctl reg write
of the LO calibration to enforce precedence rules.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/lo.c

@@ -783,7 +783,7 @@ struct b43_lo_calib * b43_calibrate_lo_setting(struct b43_wldev *dev,
 			  | rfatt->att);
 	b43_radio_write16(dev, txctl_reg,
 			  (b43_radio_read16(dev, txctl_reg) & ~txctl_value)
-			  | (rfatt->with_padmix) ? txctl_value : 0);
+			  | (rfatt->with_padmix ? txctl_value : 0));
 
 	max_rx_gain = rfatt->att * 2;
 	max_rx_gain += bbatt->att / 2;