wifi: rtw89: read version of analog hardware

The chip contains digital and analog parts, and each of them has its own
version number. This is used by BT coexistence mechanism to make strategy
decision for different analog version.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230330133324.19538-2-pkshih@realtek.com