wifi: rtw89: mac: set bf_assoc capabilities according to chip gen

When associated peer has beamformer capability, we should enable
beamformee, set CSI parameter, and configure rate to send CSI packets.
Since registers of WiFi 7 chips are very different from existing chips,
separate configuration functions.

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/20231012021455.19816-6-pkshih@realtek.com