base-files: make the generic sysinfo script run earlier to allow the...

base-files: make the generic sysinfo script run earlier to allow the mount_root script to pick up the board name

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45496 3c298f89-4303-0410-b956-a3cf2f4a3e73