image-resin.bbclass: Fix cases where RESIN_BOOT_PARTITION_FILES contains invalid entries
image-resin.bbclass: Fix cases where RESIN_BOOT_PARTITION_FILES contains invalid entries

Fixes #1330

Change-type: patch
Changelog-entry: Fix cases where RESIN_BOOT_PARTITION_FILES includes invalid entries
Signed-off-by: Andrei Gherzan <8dc7c09356db0b1762fb140617d7375c0a5a4131@balena.io>

resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin