rtl8xxxu: 8723bu: REG_BT_COEX_TABLE4 is only 8 bits

The BT_COEX_TABLE register list contains 3 32 bit registers and one 8
bit register. Hence, use rtl8xxxu_write8() when writing the 8 bit
register.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

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

@@ -5954,7 +5954,7 @@ static void rtl8723bu_init_bt(struct rtl8xxxu_priv *priv)
 	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE1, 0x55555555);
 	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE2, 0x5a5a5a5a);
 	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE3, 0x00ffffff);
-	rtl8xxxu_write32(priv, REG_BT_COEX_TABLE4, 0x00000003);
+	rtl8xxxu_write8(priv, REG_BT_COEX_TABLE4, 0x03);
 
 	memset(&h2c, 0, sizeof(struct h2c_cmd));
 	h2c.ignore_wlan.cmd = H2C_8723B_BT_IGNORE_WLANACT;