wl1271: remove deprecated __attribute__ ((packed))

One __attribute__ ((packed)) has been accidentally introduced in commit
be86cbea1e9c3a4dd8faedcfa327495d09fe3531.  This patch changes it to __packed.

Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.h b/drivers/net/wireless/wl12xx/wl1271_cmd.h
index ed80bec..a0caf4f 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.h
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.h
@@ -454,6 +454,6 @@
 
 	u8 state;
 	u8 padding[3];
-} __attribute__ ((packed));
+} __packed;
 
 #endif /* __WL1271_CMD_H__ */