Add signal based update

update sensors whenever there is a update in parameter
dbus sensor. This will register a signal for each dbus
sensor parameter and will calculate new value is there
is a change in any param sensor value.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Change-Id: I164bbb32eea6f29a2378119cdf3ac07492758b09
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
3 files changed