sunxi: enable wifi module on Pine64 boards

sunxi: enable wifi module on Pine64 boards

The Pine64(+) and the SoPine64 baseboard has an optional BT+WiFi
module, carrying an RTL8723BS. The wifi part is connected via
SDIO, the BT part is connected via UART. The BT part requires
additional code changes in the drivers so we'll skip that until 5.10.
Aside from a DTS patch to enable the wifi module, add the required
packages into the device definitions.

[    8.996970] RTL8723BS: module init start
[    9.000922] RTL8723BS: rtl8723bs v4.3.5.5_12290.20140916_BTCOEX20140507-4E40
[    9.007965] RTL8723BS: rtl8723bs BT-Coex version = BTCOEX20140507-4E40
[    9.014785] pnetdev = 000000009bdd5000
[    9.047780] RTL8723BS: rtw_ndev_init(wlan0)
[    9.053349] RTL8723BS: module init ret =0

root@OpenWrt:/# iw list
Wiphy phy0
        wiphy index: 0
        max # scan SSIDs: 9
        max scan IEs length: 2304 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Available Antennas: TX 0 RX 0
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * monitor
        Band 1:
                Frequencies:
                        * 2412 MHz [1] (20.0 dBm)
                        * 2417 MHz [2] (20.0 dBm)
                        * 2422 MHz [3] (20.0 dBm)
                        * 2427 MHz [4] (20.0 dBm)
                        * 2432 MHz [5] (20.0 dBm)
                        * 2437 MHz [6] (20.0 dBm)
                        * 2442 MHz [7] (20.0 dBm)
                        * 2447 MHz [8] (20.0 dBm)
                        * 2452 MHz [9] (20.0 dBm)
                        * 2457 MHz [10] (20.0 dBm)
                        * 2462 MHz [11] (20.0 dBm)
                        * 2467 MHz [12] (20.0 dBm) (no IR)
                        * 2472 MHz [13] (20.0 dBm) (no IR)
                        * 2484 MHz [14] (20.0 dBm) (no IR)

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>