Revert "Revert "Revert "system: core: Add Sensors group"""

This reverts commit 2006c77d9eaee33e2a47e6803b8f8c18a483bba9.

Change-Id: I9d709fd9812ef9146665fd9350bbabce672801f9
Merge "Revert "Revert "Revert "system: core: Add Sensors group"""" into kitkat