wil6210: detect HW capabilities

Read relevant information (HW ID for now) once on init
and set capabilities accordingly.

Change-Id: I6c5f35a769bce748be87edccfe105311daa5e770
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Git-commit: d8cfb80cb70711412a0b43d1a325fda8747d9b57
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git


Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>