arm64: dts: ti: verdin-am62: add iw416 based bluetooth

Add NXP IW416 based u-blox MAYA-W1 Bluetooth (using btnxpuart) as used
on the V1.1 SoMs. Wi-Fi is and was already using mwifiex.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Link: https://lore.kernel.org/r/20230901133233.105546-1-marcel@ziswiler.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-am62-verdin-wifi.dtsi

@@ -35,5 +35,11 @@ &sdhci2 {
 &main_uart5 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart5>;
+	uart-has-rtscts;
 	status = "okay";
+
+	bluetooth {
+		compatible = "nxp,88w8987-bt";
+		fw-init-baudrate = <3000000>;
+	};
 };