mac80211: fix memory leak on bcm5354

The ucode triggers the gpio pins used for the buttons and causes diag to handle them and send them to userspace.
This only happened with a more recent firmware.
This patch was tested on an Asus wl-520GU and should also work on the other bcm5354 based asus devices. I do not know if it works on the dir320.

SVN-Revision: 30665

package/mac80211/patches/805-fix_gpio_bcm5354.patch

@@ -0,0 +1,11 @@
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -2687,6 +2687,8 @@ static int b43_gpio_init(struct b43_wlde
+ 		mask |= 0x0060;
+ 		set |= 0x0060;
+ 	}
++	if (dev->dev->chip_id == 0x5354)
++		set &= 0xff02;
+ 	if (0 /* FIXME: conditional unknown */ ) {
+ 		b43_write16(dev, B43_MMIO_GPIO_MASK,
+ 			    b43_read16(dev, B43_MMIO_GPIO_MASK)