The purpose of that dummy file is to make CFE work properly with OpenWrt
bootfs. CFE for some reason ignores JFFS2 files with ino 0.
Rename it to 1-openwrt so:
1. It's consistent with bcm63xx
2. It's OpenWrt specific so sysupgrade can distinguish it from vendor
images
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 880c8b4422)
d91054a521