init.cm: Fix sysinit dependencies

sysinit depends on having the filesystems mounted, and userdata
in particular depends on having /data present. Move its startup
to post-fs-data

Change-Id: Iafcc926a3aa310c1afe501d272df5811da500d86
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_vendor_cm into myjb-next