drivers: bluetooth: hci: add IW416 BT Controller Support

Added IW416 SoC support to enable Bluetooth HCI driver perform
firmware load, and works with blueooth HCI interface.

Removed cmake file from bt_controller/, added support in hal_nxp
module to fetch firmware blobs for iW416/nw612 BT Only FW.

Signed-off-by: Nirav Agrawal <nirav.agrawal@nxp.com>