p7320: Return build.prop to stock so storage works normally

Change-Id: I4c2fecbf92e3ddec541a6c2d21957a717f346a52
p7320: Trying to make sense of this storage nonsense.

Change-Id: I6b05171fb55c7ad649ec1f1e9729977f46d1673a
p7320: Use the fuse properly?

Change-Id: Ie1fec718c11f4eec8bd9f40498d19efa6c9fb2e3