Install RTL8761B drivers in LibreElec OS

rebuild.sh

#!/bin/bash -ex

image=SYSTEM
sdcard=/media/${USER}/LIBREELEC
path=squashfs-root

rm -rf ${image} ${path}
cp ${sdcard}/${image} ${image}
unsquashfs ${image}

# drivers from https://cdn.shopify.com/s/files/1/0249/2891/1420/files/20201202_BH456A_driverforLinux-1_0929.7z
cp rtl8761b_fw.bin ${path}/usr/lib/kernel-overlays/base/lib/firmware/rtl_bt/rtl8761b_fw.bin
cp rtl8761b_config.bin ${path}/usr/lib/kernel-overlays/base/lib/firmware/rtl_bt/rtl8761b_config.bin

chown -R 0:0 ${path}/
mksquashfs ${path} ${image} -noappend -comp zstd -Xcompression-level 19 -b 1048576

md5sum ${image} | sudo tee ${sdcard}/${image}.md5
mv ${image} ${sdcard}/${image}