mediatek: ap7622-wh1: Enable bluetooth interface

Add missing bluetooth support btif in dts.

Signed-off-by: Elwin Huang <s09289728096@gmail.com>
Link: openwrt/openwrt#20181
Signed-off-by: Robert Marko <robimarko@gmail.com>

Author: s09289728096

target/linux/mediatek/dts/mt7622-asiarf-ap7622-wh1.dts

@@ -108,6 +108,10 @@
 	status = "okay";
 };
 
+&btif {
+	status = "okay";
+};
+
 &rtc {
 	status = "disabled";
 };