TODO:
- Clean up coding style to meet kernel standard. (80 line limit, netdev_err)
- Remove test for host endian
- Remove confusing macros (endian, hci_send, sdu_send, rcv_with_cb)
- Fixes for every instances of function returning -1
- Check for skb->len in gdm_lte_emulate_arp()
- Use ALIGN() macro for dummy_cnt in up_to_host()
- Error handling in init_usb()
- Explain reason for multiples of 512 bytes in alloc_tx_struct()
- Review use of atomic allocation for tx structs
- No error checking for alloc_tx_struct in do_tx()
- fix up static tty port allocation to be dynamic

Patches to:
	Jonathan Kim <jonathankim@gctsemi.com>
	Dean ahn <deanahn@gctsemi.com>
