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>

drivers/net/wireless/wl12xx/wl1251_acx.h

@@ -37,7 +37,7 @@ struct acx_header {
 
 	/* payload length (not including headers */
 	u16 len;
-};
+} __packed;
 
 struct acx_error_counter {
 	struct acx_header header;
@@ -471,7 +471,7 @@ struct acx_conn_monit_params {
 
 	u32 synch_fail_thold; /* number of beacons missed */
 	u32 bss_lose_timeout; /* number of TU's from synch fail */
-};
+} __packed;
 
 enum {
 	SG_ENABLE = 0,
@@ -1056,7 +1056,7 @@ struct acx_rate_class {
 	u8 long_retry_limit;
 	u8 aflags;
 	u8 reserved;
-};
+} __packed;
 
 struct acx_rate_policy {
 	struct acx_header header;

drivers/net/wireless/wl12xx/wl1251_cmd.h

@@ -111,7 +111,7 @@ struct wl1251_cmd_header {
 struct  wl1251_command {
 	struct wl1251_cmd_header header;
 	u8  parameters[MAX_CMD_PARAMS];
-};
+} __packed;
 
 enum {
 	CMD_MAILBOX_IDLE              		=  0,
@@ -164,7 +164,7 @@ struct cmd_read_write_memory {
 	   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_trigger_scan_to {
 	struct wl1251_cmd_header header;
 
 	u32 timeout;
-};
+} __packed;
 
 /* HW encryption keys */
 #define NUM_ACCESS_CATEGORIES_COPY 4