wil6210: support future boot loaders

Boot loader versions as backward compatible,
starting from v1

Change-Id: I310737bdb0bfd8ad9c8fed0efc6ba3750b3a1302
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Git-commit: 19c871ce3ac5f99d4354b0345c7560f6d0f760bd
Git-repo: https://github.com/kvalo/ath.git


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