arm64: defconfig: enable driver for bluetooth nxp uart

Enable driver for Bluetooth NXP UART applicable amongst others for NXP
88W8997 and IW416 as found on multiple Toradex SoMs.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -195,6 +195,7 @@ CONFIG_BT_HCIUART_MRVL=y
 CONFIG_BT_MRVL=m
 CONFIG_BT_MRVL_SDIO=m
 CONFIG_BT_QCOMSMD=m
+CONFIG_BT_NXPUART=m
 CONFIG_CFG80211=m
 CONFIG_MAC80211=m
 CONFIG_MAC80211_LEDS=y