wifi: rtw88: Extend rf_base_addr and rf_sipi_addr for RTL8814AU

wifi: rtw88: Extend rf_base_addr and rf_sipi_addr for RTL8814AU

These members of struct rtw_chip_info each have a size of 2. Increase
their size to 4, which is the number of RF paths the RTL8814AU has.

This is required to read and write the RF registers of the RTL8814AU.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/7a4d8209-b8af-4943-b5de-f53d6edf591a@gmail.com