SystemUI: Fix HSPA+ and LTE icons in statusbar

Change-Id: I7180bcf0ac206ecac27e1d37174697a9de19bdf1
frameworks/base: support devices with SoftAp that don't require firmware reload

Partial forward port from ICS.
Original Change-Id: If2db6e8ce675c3214ce645231c7a354f41ea0cc6

Change-Id: Iacb2498ec0f567a0a7c4e0dbf9127b70f09223bd