Lakka-v6.1: Add support usb-modeswitch for some USB Wi-Fi devices

[ShigeakiAsai]

This PR adds to support usb-modeswitch on Lakka-v6.1

This PR is related with issue #2216

Some USB Wi-Fi module needs to switch working mode.

• 0bda:1a2b Realtek Semiconductor Corp. RTL8188GU 802.11n WLAN Adapte CD-ROM mode
• 0e8d:2870 MediaTek MT7612U

This mode changing is supported by the usb-modeswitch package.
Upstream LibreELEC has this package.
But Lakka was not able to use this LE's package as is.
It shows panic and retroarch does not start.

Therefore, we create a new/separate package for Lakka.

commit: 5 commits

1. usb-modeswitch-lakka: add package for usb-modeswitch on Lakka
   Adds usb-modeswitch-lakka package

2. lakka/package.mk: enable usb-modeswitch-lakka package
   Enables usb-modeswitch-lakka package on all devices

3. RK3326: disable usb-modeswitch-RK3326 package
   Disables usb-modeswitch-RK3326 package on RK3326

4. usb-modeswitch-RK3326: remove package
   Removes usb-modeswitch-RK3326 package

5. Samsung: add rtw8821c/rtl8821c firmwares
   Adds supported device firmware files to Samsung/Exynos

build

All 34 devices build are passed.
Base Lakka-v6.1 commit: afc4ca1

test

Pickup 5 devices test are worked.

• AMLGX: BananaPi-M5(aarch64)
  - device switches from idVendor=0bda, idProduct=1a2b to idVendor=0bda, idProduct=c820
  - Wi-Fi is able to use.
• Generic: Generic(x86.64)
  - device detected 0bda:c820
  - Wi-Fi is able to use.
• RPi4: Raspberry Pi 4(aarch64)
  - device switches from idVendor=0bda, idProduct=1a2b to idVendor=0bda, idProduct=c820
  - wlan1 is recognized.(wlan0 is RPi4 internal Wi-Fi)
• RK3326: ODROID-GO Super(aarch64)
  - device switches from idVendor=0bda, idProduct=1a2b to idVendor=0bda, idProduct=c820
  - Wi-Fi is able to use.
• Exynos: ODROID-XU4(arm)
  - device switches from idVendor=0bda, idProduct=1a2b to idVendor=0bda, idProduct=c820
  - Wi-Fi is able to use.

note

• If USB wifi can't mode changing when it inserts before power on, please disconnect and reconnect it.
• I will make new PR for devel branch later.

Edit 1

• 0bda:1a2b was not only "RTL8188GU 802.11n WLAN Adapter" device
  This vendorID/productID was used on the another Realtek USB WiFi dongle I confirmed.

Thanks
ASAI, Shigeaki