Align bottom text with battery graph in RTL layout.

Bug: 30161009

Bottom text (estmitated remaining battery time) should be stay under the
battery graph in RTL. To help alignment, we use a spacer view to the
left or right of text depending on layout direction.

Change-Id: Iaf706c1a963246e7f04764e5f24e6cb4bf3d2bbf
2 files changed