wifi: rtw89: 8922a: add chip_ops related to BB init

The chip_ops::bb_preinit and ::bb_postinit are called before and after
loading BB parameters from tables of firmware file. The ::bb_reset is
used to reset hardware state, and currently it is not needed by 8922AE so
leave it as empty. The ::bb_sethw is to implement conditional parameters.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240120003831.7014-4-pkshih@realtek.com