b43: b43_phyops_a can be static

CC: "Rafał Miłecki" <zajec5@gmail.com>
CC: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_a.c

@@ -573,7 +573,7 @@ static void b43_aphy_op_pwork_60sec(struct b43_wldev *dev)
 {//TODO
 }
 
-const struct b43_phy_operations b43_phyops_a = {
+static const struct b43_phy_operations b43_phyops_a = {
 	.allocate		= b43_aphy_op_allocate,
 	.free			= b43_aphy_op_free,
 	.prepare_structs	= b43_aphy_op_prepare_structs,