wifi: rtw89: usb: Move bulk out map to new struct rtw89_usb_info

wifi: rtw89: usb: Move bulk out map to new struct rtw89_usb_info

RTL8852AU, RTL8852CU, and RTL8922AU will need a different TX channel
to bulk out endpoint mapping, so create a new struct rtw89_usb_info
and move the mapping there. Initialise it in each chip's driver.

Struct rtw89_usb_info will also hold some registers which are located
at different offsets in RTL8852CU compared to the other wifi 6 chips.

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/de11cfae-1dc0-4514-95b2-02b1bbfa92be@gmail.com