Control radio poweroff on SIM reset using a config variable.

Radio power off should not be required on SIM reset and currently causes
issues due to missed SIM notifications after a reset while the radio is off.
This was required for legacy devices where radios did not handle the reset
completely before the reset notification was sent to device.

Bug: 17154939
Change-Id: I53638a28998ef3b3dc41aae8948b1aef74ec49e2