Allow Background Location Access for Shell

The shell has COARSE and FINE permission, but it
needs background access to support CTS test cases
that must be run with elevated permissions from
the shell.

Bug: 159236070
Test: atest PhoneStateListenerTest#testBarringInfo

Merged-In: Iba3fcb3a43c5df3c30dadf6b7733eaee03d1d0e3
Change-Id: Iba3fcb3a43c5df3c30dadf6b7733eaee03d1d0e3
(cherry picked from commit 89796d49)