staging:r8188eu: refactor rtw_check_beacon_data() - remove rtw_hal_get_hwreg() call

rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value
and refactor rtw_check_beacon_data().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_ap.c

@@ -1024,15 +1024,12 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 	p = rtw_get_ie(ie + _BEACON_IE_OFFSET_, _HT_CAPABILITY_IE_, &ie_len,
 		       (pbss_network->IELength - _BEACON_IE_OFFSET_));
 	if (p && ie_len > 0) {
-		u8 rf_type;
 		struct ieee80211_ht_cap *pht_cap = (struct ieee80211_ht_cap *)(p + 2);
 
 		pHT_caps_ie = p;
 		ht_cap = true;
 		network_type |= WIRELESS_11_24N;
 
-		rtw_hal_get_hwreg(padapter, HW_VAR_RF_TYPE, (u8 *)(&rf_type));
-
 		if ((psecuritypriv->wpa_pairwise_cipher & WPA_CIPHER_CCMP) ||
 		    (psecuritypriv->wpa2_pairwise_cipher & WPA_CIPHER_CCMP))
 			pht_cap->ampdu_params_info |= (IEEE80211_HT_CAP_AMPDU_DENSITY & (0x07 << 2));
@@ -1042,10 +1039,8 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf,  int len)
 		/* set  Max Rx AMPDU size  to 64K */
 		pht_cap->ampdu_params_info |= (IEEE80211_HT_CAP_AMPDU_FACTOR & 0x03);
 
-		if (rf_type == RF_1T1R) {
 		pht_cap->mcs.rx_mask[0] = 0xff;
 		pht_cap->mcs.rx_mask[1] = 0x0;
-		}
 		memcpy(&pmlmepriv->htpriv.ht_cap, p+2, ie_len);
 	}