mwifiex: use sizeof(array) to print_hex_dump_bytes

DBG_CMD_NUM is the number of commands, not the actual bytes of
data for printing.

Also remove the duplicated DBG_CMD_NUM definition.
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/cmdevt.c

@@ -918,20 +918,23 @@ mwifiex_cmd_timeout_func(unsigned long function_context)
 		dev_err(adapter->dev, "last_cmd_index = %d\n",
 			adapter->dbg.last_cmd_index);
 		print_hex_dump_bytes("last_cmd_id: ", DUMP_PREFIX_OFFSET,
-				     adapter->dbg.last_cmd_id, DBG_CMD_NUM);
+				     adapter->dbg.last_cmd_id,
+				     sizeof(adapter->dbg.last_cmd_id));
 		print_hex_dump_bytes("last_cmd_act: ", DUMP_PREFIX_OFFSET,
-				     adapter->dbg.last_cmd_act, DBG_CMD_NUM);
+				     adapter->dbg.last_cmd_act,
+				     sizeof(adapter->dbg.last_cmd_act));
 
 		dev_err(adapter->dev, "last_cmd_resp_index = %d\n",
 			adapter->dbg.last_cmd_resp_index);
 		print_hex_dump_bytes("last_cmd_resp_id: ", DUMP_PREFIX_OFFSET,
 				     adapter->dbg.last_cmd_resp_id,
-				     DBG_CMD_NUM);
+				     sizeof(adapter->dbg.last_cmd_resp_id));
 
 		dev_err(adapter->dev, "last_event_index = %d\n",
 			adapter->dbg.last_event_index);
 		print_hex_dump_bytes("last_event: ", DUMP_PREFIX_OFFSET,
-				     adapter->dbg.last_event, DBG_CMD_NUM);
+				     adapter->dbg.last_event,
+				     sizeof(adapter->dbg.last_event));
 
 		dev_err(adapter->dev, "data_sent=%d cmd_sent=%d\n",
 			adapter->data_sent, adapter->cmd_sent);

drivers/net/wireless/mwifiex/main.h

@@ -115,8 +115,6 @@ enum {
 #define MWIFIEX_TYPE_DATA				0
 #define MWIFIEX_TYPE_EVENT				3
 
-#define DBG_CMD_NUM						5
-
 #define MAX_BITMAP_RATES_SIZE			10
 
 #define MAX_CHANNEL_BAND_BG     14