Create wrapper for 2.0/2.1 sensor HALs

Creates a wrapper that makes a 2.0 sensor HAL appear to look like a 2.1
sensor HAL so that various pieces of code can be shared between the two
implementations.

Bug: 144139857
Test: Run VTS
Change-Id: I4ee4fd2b900e5d4ca744f420f69e150ba38f7949