mediav2: Restrict OMX encoder tests to use default decoder

Some OMX encoders do not work as expected when running in surface mode
with s/w decoders. These tests are now limited to default decoder when
testing OMX encoders.

Bug: 302285865
Bug: 306447777

Test: atest CtsMediaV2TestCases:CodecEncoderSurfaceTest

Merged-In: Ida031e328c2229a43134e0448fea064f0e3d82b1
Change-Id: Ida031e328c2229a43134e0448fea064f0e3d82b1
1 file changed