wil6210: support flashless device

Talyn device supports boot without flash.
Driver detects flashless device and in this case waits for ready indication
from HW machine (instead of bootloader ready indication). Also in this
case, MAC address is retrieved from OTP.

Change-Id: Ibaef81c71676959548d10641f2dd64899147b976
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Git-commit: 2a0efe6a32ac3792da7a8c94a17fa65541983de7
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Signed-off-by: Maya Erez <merez@codeaurora.org>