fb: fix qs battery tile on normal icon due of left over

I forgot to commit a change so on icon and icon percentage there
was still a margin set. Remove the magin to fix it

Change-Id: If8848835d2371b44d3dc414a9f30af03f222a895
fb: add bottom margin to stock default battery icon

We set the layout parameters programmatically so the fix from
google does not take effect. To solve set the bottom margin
programmatically based on the current display density

Change-Id: I9caa0e729afa19eb7cb852a1df6ad036a2839d1b