i40e: Use BIT() macro for priority map parsing

Replace one left over (1 << up) in the i40e_dcb.c file with the BIT()
macro.

Change-ID: I39492a400a2cee5ac566143a5b436cc478bea0db
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e_dcb.c

@@ -393,7 +393,7 @@ static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
 	for (i = 0; i < dcbcfg->numapps; i++) {
 		app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
 		for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
-			if (app->prio_map & (1 << up))
+			if (app->prio_map & BIT(up))
 				break;
 		}
 		dcbcfg->app[i].priority = up;