wifi: rtw89: add chip_ops::update_beacon to abstract update beacon operation

Since coming WiFi 7 and existing chips use different update_beacon()
format, add to abstract selection of H2C command.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240108091359.67636-1-pkshih@realtek.com