Revert "ANDROID: Incremental fs: Fix uninitialized variable"

This reverts commit 45598888.

Set incfs back to rvc shipping incfs

Bug: 178509184
Test: incfs_test passes
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: Id4f4e30a1b94adeadeebd9d734f15e0e2567cf0a