rtw89: reconstruct fw feature

rtw89: reconstruct fw feature

As the fw features gradually increase, it would be better that
we have a set of methods to maintain fw features instead of using
scattered bool variables.

We reconstruct the way fw recognize features, and introduce
RTW89_CHK_FW_FEATURE() / RTW89_SET_FW_FEATURE() to check / set
fw features for uses.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220314071250.40292-8-pkshih@realtek.com