Adding IRadioConfig 1.2 to current.txt.

To better test CBRS, we want IRadio 1.1 to be Android P plus CBRS
HAL interfaces, while 1.2 will be 1.1 plus all other Android Q
interfaces. So we are creating V1_2 folder and moving everything
currently defined in android.hardware.radio.config.V1_1 there.

Bug: 117805040
Test: build and telephony unittest
Change-Id: Icf208036385d1d9994d07fe7d839b290f2234622
Merged-In: Icf208036385d1d9994d07fe7d839b290f2234622