Use USB device label as mountpoint if available

credits to t-nelson
https://github.com/Pivosgroup/buildroot-linux/commit/a30d6366720279f1e81e4c54de331756812cd48e
Use jpeg-turbo package and update host dependencies accordingly

libjpeg-turbo can speed up jpeg compression and decompression
by a factor of 2-4x because it uses SIMD (NEON)