Correctly report "Unsupported bitstream profile"
For vp9 decoder build without profile 2 and profile 3 support, this commit changes to report error "Unsupported bitstream profile" for input streams in profile 2 or 3, rather than other misleading error information. In addition, one of the invalid files in unit tests is actually coded profile 2, this commit makes it tested only when the decoder is built with vp9-highbitdepth. This fixes issue #1028. Change-Id: I8b6c1210787c8f89c703a546687dcf973ac20fc0