wil6210: add oob_mode module parameter

wil6210: add oob_mode module parameter

Add module parameter oob_mode. Takes effect the next time
the interface is brought up and FW is loaded. Puts the FW
in special "out of the box" (OOB) mode which is used for
diagnostics and certification.

Change-Id: I561e4ab26c8ac74d6fbcf19492b01751033b64d9
Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Git-commit: 1f1a361abf73edfb94ca010c51587de378bc7c68
Git-repo: https://github.com/kvalo/ath.git
CRs-Fixed: 982931
Signed-off-by: Maya Erez <merez@codeaurora.org>