driver: bluetooth: hci: Add NXP BT module support

Implement UART firmware download driver for NXP
BT module.

Only support Murata 2EL M.2 module on RT1170EVKB.

And only one instance can be supported now.

Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>

drivers/bluetooth/hci/Kconfig

@@ -248,3 +248,48 @@ config BT_SILABS_HCI_BUFFER_MEMORY
 	help
 	  Select the size of allocated memory buffer for the Silicon Labs
 	  Bluetooth Library.
+
+config BT_H4_NXP_CTLR
+	bool "NXP Bluetooth Controller [EXPERIMENTAL]"
+	select GPIO
+	# select UART_USE_RUNTIME_CONFIGURE
+	select EXPERIMENTAL
+	depends on BT_H4
+	select CRC
+	default y
+	depends on DT_HAS_NXP_BT_HCI_UART_ENABLED
+	help
+	  Enables support for NXP Bluetooth Controller.
+	  Murata 2EL M.2 Moudle base on NXP IW612 Chipset which supports
+	  Wi-Fi® 802.11a/b/g/n/ac/ax + Bluetooth® 5.3 BR/EDR/LE + IEEE802.1.5.4
+	  up to 601 Mbps data rate on Wi-Fi® and 2Mbps data rate on Bluetooth®.
+	  4-wire UART@3M baud is supported. PCM for audio is also supported.
+	  Details of the module could be fond on
+	  https://www.embeddedartists.com/products/2el-m-2-module/
+
+	  The configuration depends on the firmware (named uart_nw61x_se.h)
+	  of Murata 2EL M.2 Moudle. It could be downloaded here
+	  https://github.com/NXP/wifi_nxp/blob/MCUX_2.15.000/wifi_bt_firmware/nw61x/uart_nw61x_se.h
+	  And it needs to be placed into the folder <zephyrproject>/zephyr/
+	  drivers/bluetooth/hci.
+
+	  More inforamtion about NXP Bluetooth profuct could be found on
+	  https://www.nxp.com/products/wireless-connectivity/wi-fi-plus-bluetooth-plus-802-15-4:WIFI-BLUETOOTH
+
+if BT_H4_NXP_CTLR
+
+config BT_H4_NXP_CTLR_WAIT_HDR_SIG_TIMEOUT
+	int "Timeout for waiting HDR Signure"
+	range 1000 60000
+	default 2500
+	help
+	  Timeout for waiting HDR Signure. Unit is millisecond.
+
+config BT_H4_NXP_CTLR_WAIT_TIME_AFTER_UPLOAD
+	int "Waiting time after firmware is uploaded"
+	range 1000 5000
+	default 1000
+	help
+	  Waiting time after firmware is uploaded. Unit is millisecond.
+
+endif #BT_H4_NXP_CTLR