Speed up notification pulldown

Change-Id: Iec32a75d8c9c61e59130af54d319fb0a1c0ba00b
Increase scroll speeds

AOKP PS:
This does not increase touch sensitivity as advertised, it does, however
increase the speed of scrolling giving the feeling of more responsiveness.
Commit message editted to reflect this.

Change-Id: I77e6aeca3667808e630dc142a2e561d3ddddef80