skia: add compat SkBitmap::setConfig symbol
skia: add compat SkBitmap::setConfig symbol

Required for older Samsung libtvout

Change-Id: Icaae6ca01556553e57c3a194427093c59e0c5f65

CandyKat/external_skia,CandyKat/external_skia,CandyKat/external_skia,CandyKat/external_skia,CandyKat/external_skia