Allow mock modem shell access without root access

These command will be used for CTS on unrooted devices, but add
permission check to avoid security issue

Bug: 292167812
Test: atest MockWifiTest
Merged-In: I3548a20494cf9701369c00637c5a551983193da4
Change-Id: I3548a20494cf9701369c00637c5a551983193da4
2 files changed