arm64: dts: meson-g12a-x96-max: bump bluetooth bus speed to 2Mbaud/s

Setting to 2Mbaud/s is the nominal bus speed for common usages.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts

@@ -208,6 +208,7 @@ &uart_A {
 	bluetooth {
 		compatible = "brcm,bcm43438-bt";
 		shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+		max-speed = <2000000>;
 		clocks = <&wifi32k>;
 		clock-names = "lpo";
 	};