brcm80211: Fix compile error for .disable_hub_initiated_lpm.

Fix missing comma.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Wu Fengguang <wfg@linux.intel.com>

drivers/net/wireless/brcm80211/brcmfmac/usb.c

@@ -1604,7 +1604,7 @@ static struct usb_driver brcmf_usbdrvr = {
 	.id_table = brcmf_usb_devid_table,
 	.suspend = brcmf_usb_suspend,
 	.resume = brcmf_usb_resume,
-	.supports_autosuspend = 1
+	.supports_autosuspend = 1,
 	.disable_hub_initiated_lpm = 1,
 };