wl1251: add missing __packed modifier for some structs

Several acx and cmd structures are missing __packed modifier, add it.
This was noticed while comparing them with corresponding wl1271 code.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1251_cmd.h b/drivers/net/wireless/wl12xx/wl1251_cmd.h
index a9e4991..60d7e52 100644
--- a/drivers/net/wireless/wl12xx/wl1251_cmd.h
+++ b/drivers/net/wireless/wl12xx/wl1251_cmd.h
@@ -111,7 +111,7 @@
 struct  wl1251_command {
 	struct wl1251_cmd_header header;
 	u8  parameters[MAX_CMD_PARAMS];
-};
+} __packed;
 
 enum {
 	CMD_MAILBOX_IDLE              		=  0,
@@ -164,7 +164,7 @@
 	   of this field is the Host in WRITE command or the Wilink in READ
 	   command. */
 	u8 value[MAX_READ_SIZE];
-};
+} __packed;
 
 #define CMDMBOX_HEADER_LEN 4
 #define CMDMBOX_INFO_ELEM_HEADER_LEN 4
@@ -339,7 +339,7 @@
 	struct wl1251_cmd_header header;
 
 	u32 timeout;
-};
+} __packed;
 
 /* HW encryption keys */
 #define NUM_ACCESS_CATEGORIES_COPY 4