Skip direct report test if sensor is not available

Skip SensorsHidlTest.*AshmemDirectReportOperation* tests if sensor
is not available on device.

Bug: 64230704
Test: compiles and test pass for a pixel device with mag sensor
      masked in hal.

Merged-In: I9bfbea6301891eaa2b272bd3d15b0e237799b5d6
Change-Id: I9bfbea6301891eaa2b272bd3d15b0e237799b5d6
(cherry picked from commit 31e5bf8d)