wil6210: export FW/HW versions through debugfs

Change-Id: I078a6a6b400e13da586c8c06a878dfdfd43fb487
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Git-commit: 6f55007d0e9d179d5893a518a9466c0abbcfa1ca
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git


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