arm: Increase boot size to 256 MiB
Show end of log if debootstrap fails.
Closes: #210 (closed).
Tests:
- Build a pine64-plus image for unstable.
Note: I could not test building an armhf image due to #208 (closed).
Signed-off-by: James Valleroy jvalleroy@mailbox.org
Edited by James Valleroy