staging: brcm80211: remove macro definition DRV_MODULE_NAME

The macro definition DRV_MODULE_NAME has exactly the same value as
KBUILD_MODNAME so using that instead now.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd_linux.c

@@ -180,8 +180,6 @@ MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
 MODULE_LICENSE("Dual BSD/GPL");
 
-#define DRV_MODULE_NAME "brcmfmac"
-
 /* Linux wireless extension support */
 #if defined(CONFIG_WIRELESS_EXT)
 #include <wl_iw.h>
@@ -1490,7 +1488,7 @@ static void dhd_ethtool_get_drvinfo(struct net_device *net,
 {
 	dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
 
-	sprintf(info->driver, DRV_MODULE_NAME);
+	sprintf(info->driver, KBUILD_MODNAME);
 	sprintf(info->version, "%lu", dhd->pub.drv_version);
 	sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
 	sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));