Driver: HCI: set BT_NXP_NW612 as default

Add a choice `BT_NXP_MODULE` to make sure only one controller can be
selected if the multiple controllers are supported.

All NXP Bluetooth module similar with BT_NXP_NW612 should be added
to the section.

And set the BT_NXP_NW612 as the default controller.

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