Add new fields to fingerprint PointerContext

The new fields provide additional information to the HAL about the touch
events originating from the framework.

Bug: 205915651
Test: m android.hardware.biometrics.common-update-api
Test: m android.hardware.biometrics.fingerprint-update-api
Test: lunch cf_x86_phone-userdebug && m
Change-Id: I987e26ac03e3268eea30feb9bbddffe6ca8d0035