SystemUI: Align the QS carrier text to its gravity bias

* for single sim users/devices with carriers that have short names such as TNT, Jio, Smart.
  The qs carrier text is centered to its view bounds making the layout a bit awkward especially when using combined signal icons.

Change-Id: Ib3f96ad58df0e3648372fd0dd28112fa72cec1ee
Signed-off-by: minaripenguin <minaripenguin@users.noreply.github.com>
Signed-off-by: Adithya R <gh0strider.2k18.reborn@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>