drivers: bluetooth: hci_nxp_setup: support for bt disable and reinit

- added flag in nxp setup driver to perform HCI controller firmware-
  load and configuration only once. This avoid loading/setting-up
  controller fw on successive bt_init() after bt_disable() call.

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