Add bluetooth script

wgao@pek-wgao-d1:~/logs$ cat bluetooth.sh
#!/bin/bash

modprobe hci_uart
modprobe bnep
modprobe rfcomm
modprobe gpio_en_am335x
bluetoothd --udev
hciattach /dev/ttyO1 texas 3000000
hcitool dev
# hcitool scan