ssb: Fix extraction of values from SPROM

This fixes extraction of some values from the SPROM.
It mainly fixes extraction of antenna related values, which
is needed for another b43 fix sent later.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43legacy/phy.c b/drivers/net/wireless/b43legacy/phy.c
index 9d527e6..57c668f 100644
--- a/drivers/net/wireless/b43legacy/phy.c
+++ b/drivers/net/wireless/b43legacy/phy.c
@@ -1859,7 +1859,7 @@
 	 * which accounts for the factor of 4 */
 #define REG_MAX_PWR 20
 	max_pwr = min(REG_MAX_PWR * 4
-		      - dev->dev->bus->sprom.antenna_gain_bg
+		      - dev->dev->bus->sprom.antenna_gain.ghz24.a0
 		      - 0x6, max_pwr);
 
 	/* find the desired power in Q5.2 - power_level is in dBm