wil6210: add oob_mode for AP certification

Add a new value to the oob_mode module parameter for
supporting AP certification.
All enabled values of oob_mode (>0) are intended only
for debugging and diagnostics.

Change-Id: I170c953b0f126513b6fec7a7c316d282ed56367e
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: b8c31b5d6c232a36c821bdd556b60c033a1c1577
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


[merez@codeaurora.org: fix trivial merge conflicts]
Signed-off-by: Maya Erez <merez@codeaurora.org>