SetupWizard: Fix the accessibility services gesture

Returning false from onInterceptTouchEvent() or onTouchEvent() causes
getPointerCount() to never be greater than 1, therefore enabling the
accessibility services is currently impossible. Fix this and simplify
the code merging onInterceptTouchEvent() into onTouchEvent().

Change-Id: Ieadbb41f9f3f3fb62d11f5a29986630d35e7e8c4
2 files changed