Mark PermissionController as updatable.

This is an updatable module. The flag enforces conformance to associated
requirements with a module being updatable e.g. compiling against stable
SDKs.

Bug: 153333044
Test: m
Change-Id: I02835994cd91d4fd8cd4776c2e351efe00d39fc1
Merged-In: I02835994cd91d4fd8cd4776c2e351efe00d39fc1
(cherry picked from commit e8d1140acc2df0e9e8e66c45adba8a5489035b24)