add L565 to our cycle of color configs in sampleapp

Bug: skia:
Change-Id: I1fd78b495e2f087096ad5b5db36c15a16514409c
Reviewed-on: https://skia-review.googlesource.com/43160
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed