Hook up setRadioPower_1_5 HAL API

We are introducinga newer version of setRadioPower in HAL 1.5. It's
used to optimize emergency call scanning upon radio on.

Bug: 143683647
Test: existing unittest
Change-Id: Ic5c07e355898c21ee6bb564301be69492862c8a4
Merged-In: Ic5c07e355898c21ee6bb564301be69492862c8a4