5.0.21-armv7-x19 release

AUFS: https://github.com/sfjro/aufs5-standalone/commit/25f304c2c8c866b551ba7dc0c26b8fc1bbac95fa
BBDTBS: https://github.com/beagleboard/BeagleBoard-DeviceTrees/commit/7011307c0575ec8011463aba6be7a21c687d14ef
CAN-ISOTP: https://github.com/hartkopp/can-isotp/commit/b312dbd5e720833cb69bc65af3670a52dd1e93ca
TI_AMX3_CM3: http://git.ti.com/gitweb/?p=processor-firmware/ti-amx3-cm3-pm-firmware.git;a=commit;h=fb484c5e54f2e31cf0a338d2927a06a2870bcc2c
WIREGUARD: https://git.zx2c4.com/WireGuard/commit/edad0d6e99e5133b1e8e865d727a25fff6399cb4



Signed-off-by: Robert Nelson <robertcnelson@gmail.com>