Copy preopted profiles to ref for first boot

Since the app is partially compiled, compiled methods won't get new
samples. We need to copy the preopted profiles over so that the
methods are compiled for future speed-profile runs.

Test: Flash preopted speed-profile maps.
Test: Confirm ref profile exists.
Test: Close maps, recompile with speed-profile, test the profile was used.
Test: Launch maps, do some stuff until cur profile exists.
Test: Re-compile with speed-profile and confirm cur merged over ref correctly.

Bug: 38032017
Change-Id: I13f4c7eecca1feb2ab41299946828ffa4e59df7f