Sensors: MultiHal: fix naming and compiler warning

Changed module name back to sensors.$(TARGET_DEVICE) to assure
proper load ordering.

Fix use of GNU old-style field designator extension and a couple
type-mismatched comparisons.

Bug: 28251347
Change-Id: I7cf6cc1f78085b8b254729cd8ec42bdb20ea3f81
2 files changed