Fix to make read-only filesystem not cause crash on boot
Fix to make read-only filesystem not cause crash on boot

During boot, read-only boot partition was causing a crash due to sed trying to
write to disk. Added a directory /circlean/boot_partition to hold changes to
cmdline.txt that fix this issue.

CIRCL/Circlean,CIRCL/Circlean,CIRCL/Circlean,Rafiot/KittenGroomer,Rafiot/KittenGroomer,Rafiot/KittenGroomer