Add OP_READ_PHONE_STATE app op - framework

The READ_PHONE_STATE permission protects PII information and
is in the Phone group. This change is adding the corrseponding
app op for gating access to the API guarded by READ_POHNE state
which will be used instead as an access control for legacy apps.

Change-Id: I2ff895a5a0e529f26ec0ad706266a30d829268ba