Battery: Show green when battery is 100% and introduce 4th stage

* Only show full green when battery is 100% instead of >= 90
* Introduce Yellow increment which includes 70-99%
	 0-14: red
	15-69: orange
	70-99: yellow
          100: green

Change-Id: I24af9bb012744ea15d411c2aa42afe9388f2a97e
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>