unicorn: add instruction breakpoints as extra_stop_points
unicorn: add instruction breakpoints as extra_stop_points

This ensures that we actually stop and don't run past that breakpoint with
unicorn.

f-prettyland/angr,schieb/angr,angr/angr,iamahuman/angr,axt/angr,schieb/angr,tyb0807/angr,iamahuman/angr,chubbymaggie/angr,chubbymaggie/angr,tyb0807/angr,axt/angr,schieb/angr,f-prettyland/angr,f-prettyland/angr,iamahuman/angr,angr/angr,angr/angr,axt/angr,tyb0807/angr,chubbymaggie/angr