thermal: update virtual coefficients to 0.5 version

Update virtual-skin, virtual-skin-charge and cellular-emergency
sensors to 0.5 version coefficients.
Added "Version" field for virtual-skin node for identifying the
version of coefficients.

Bug: 229418131, 227477863
Test: Build and boot on device. Check virtual-skin readings
Signed-off-by: Sayanna Chandula <sayanna@google.com>
Change-Id: I709fa1dfa5304416335bba1a7cb21a267e00c744