goldfish: use fstab.goldfish

Don't rely on init.rc to mount our filesystems for us.
Do it ourselves from fstab.goldfish.

Change-Id: I80ba51f34e8d34b24bc7b14f527ac507d2d819e1
Merge tag 'android-4.4_r1' into cm-11.0

Android 4.4 Release 1.0
Merge remote-tracking branch 'cm/cm-11.0' into HEAD