wireless: ipw2x00: convert to use DRIVER_ATTR_RW

We are trying to get rid of DRIVER_ATTR(), and the ipw2x00 driver's
attributes can be trivially changed to use DRIVER_ATTR_RW().

Cc: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: <linux-wireless@vger.kernel.org>
Cc: <netdev@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/wireless/intel/ipw2x00/ipw2100.c

@@ -4160,12 +4160,12 @@ static ssize_t show_bssinfo(struct device *d, struct device_attribute *attr,
 static DEVICE_ATTR(bssinfo, S_IRUGO, show_bssinfo, NULL);
 
 #ifdef CONFIG_IPW2100_DEBUG
-static ssize_t show_debug_level(struct device_driver *d, char *buf)
+static ssize_t debug_level_show(struct device_driver *d, char *buf)
 {
 	return sprintf(buf, "0x%08X\n", ipw2100_debug_level);
 }
 
-static ssize_t store_debug_level(struct device_driver *d,
+static ssize_t debug_level_store(struct device_driver *d,
 				 const char *buf, size_t count)
 {
 	u32 val;
@@ -4179,9 +4179,7 @@ static ssize_t store_debug_level(struct device_driver *d,
 
 	return strnlen(buf, count);
 }
-
-static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, show_debug_level,
-		   store_debug_level);
+static DRIVER_ATTR_RW(debug_level);
 #endif				/* CONFIG_IPW2100_DEBUG */
 
 static ssize_t show_fatal_error(struct device *d,

drivers/net/wireless/intel/ipw2x00/ipw2200.c

@@ -1195,12 +1195,12 @@ static void ipw_led_shutdown(struct ipw_priv *priv)
  *
  * See the level definitions in ipw for details.
  */
-static ssize_t show_debug_level(struct device_driver *d, char *buf)
+static ssize_t debug_level_show(struct device_driver *d, char *buf)
 {
 	return sprintf(buf, "0x%08X\n", ipw_debug_level);
 }
 
-static ssize_t store_debug_level(struct device_driver *d, const char *buf,
+static ssize_t debug_level_store(struct device_driver *d, const char *buf,
 				 size_t count)
 {
 	char *p = (char *)buf;
@@ -1221,9 +1221,7 @@ static ssize_t store_debug_level(struct device_driver *d, const char *buf,
 
 	return strnlen(buf, count);
 }
-
-static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
-		   show_debug_level, store_debug_level);
+static DRIVER_ATTR_RW(debug_level);
 
 static inline u32 ipw_get_event_log_len(struct ipw_priv *priv)
 {