Add setup usage for ACCESS_KEYGUARD_SECURE_STORAGE.

The SET_INITIAL_LOCK permission takes the "signature|setup" protection
level. Replicate this for secure storage access as this is an implicit
requirement.

Bug: 153726356
Test: N/A
Signed-off-by: Julius D'Souza <jdsouza@google.com>
Change-Id: If03cbf54d69125ee262a0f6ba7a7e11744a442de
Merged-In: If03cbf54d69125ee262a0f6ba7a7e11744a442de