Update reboot and screenshot power menu drawables with xxhdpi versions

Change-Id: I59fff6cf1621f59662408b8223a6582cdb54049e
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