wifi: rtw89: 8922a: add chip_ops::rfk_hw_init

Add a chip_ops for WiFi 7 chips to set additional RF configurations
including MLO and PLL settings.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240202030642.108385-12-pkshih@realtek.com