iwlwifi: RX API: remove unnecessary anonymous struct

There's no value in having an anonymous struct for holding
a few fields, remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/rx.h

@@ -601,7 +601,6 @@ struct iwl_rx_mpdu_desc {
 	 */
 	u8 mac_phy_idx;
 	/* DW4 - carries csum data only when rpa_en == 1 */
-	struct {
 	/**
 	 * @raw_csum: raw checksum (alledgedly unreliable)
 	 */
@@ -618,7 +617,6 @@ struct iwl_rx_mpdu_desc {
 		 */
 		__le16 sigb_common2;
 	};
-	};
 	/* DW5 */
 	/**
 	 * @status: &enum iwl_rx_mpdu_status