Forward port SystemUI: HSPA+ Support

Add the ability to recognize HSPA+ by creating a separate case for HSPAP and
include new H+ icons.

Signed-off-by: Bajee11 <bajee11@gmail.com>
Change-Id: I889a28e4b4cb49862b291641df5a00388db87551
Merge "Forward port SystemUI: HSPA+ Support" into android-4.4