d2-common: overlay: increase pie_trigger_height

For those who use softkeys and want pie controls, this will allow it
to actually work, 3dp is just too small for it to work for us.

This will not affect you if you do not use softkeys.

Change-Id: I042a16694bb45ae8554cf7b2b356345db33e10ba
Merge remote-tracking branch 'upstream/cm-10.1' into HEAD

Change-Id: Ie1c3504bbbdc4385184997a01e16756c9c3b8fa8