rtl8xxxu: Use descriptive bits for setting RX paths for 1T2R parts

This reduce the use of magic values a little.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c

@@ -3814,8 +3814,10 @@ static int rtl8xxxu_init_phy_bb(struct rtl8xxxu_priv *priv)
 		rtl8xxxu_write32(priv, REG_FPGA1_TX_INFO, val32);
 
 		val32 = rtl8xxxu_read32(priv, REG_CCK0_AFE_SETTING);
+		val32 &= ~CCK0_AFE_RX_MASK;
 		val32 &= 0x00ffffff;
-		val32 |= 0x45000000;
+		val32 |= 0x40000000;
+		val32 |= CCK0_AFE_RX_ANT_B;
 		rtl8xxxu_write32(priv, REG_CCK0_AFE_SETTING, val32);
 
 		val32 = rtl8xxxu_read32(priv, REG_OFDM0_TRX_PATH_ENABLE);

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h

@@ -882,6 +882,10 @@
 #define  CCK0_SIDEBAND			BIT(4)
 
 #define REG_CCK0_AFE_SETTING		0x0a04
+#define  CCK0_AFE_RX_MASK		0x0f000000
+#define  CCK0_AFE_RX_ANT_AB		BIT(24)
+#define  CCK0_AFE_RX_ANT_A		0
+#define  CCK0_AFE_RX_ANT_B		(BIT(24) | BIT(26))
 
 #define REG_CONFIG_ANT_A		0x0b68
 #define REG_CONFIG_ANT_B		0x0b6c