Fixed permission controller deny callbacks

Fixed issue which caused all permission deny callbacks to be sent with
the UID of the user 0 package, regardless of the package's true UID.

Test: On a device with multiple users, register a permission change
callback for the second user version of a package, and deny a granted
permission. The callback should fire.

Change-Id: Ice7e9accb150a866082e018f57ab9eb0b3100675