Limit tests in DecodeOnlyTest.java to Android U and above

Tests in DecoderOnlyTest.java test BUFFER_FLAG_DECODE_ONLY flag
which was added in Android U. When these tests run on devices
running older Android versions as part of MTS, these tests would
fail. Now these tests are limited to devices running Android U
and above.

Bug: 263005394
Test: atest CtsMediaDecoderTestCases:DecodeOnlyTest

Change-Id: I8e4188dbb0169caa79b12af4a7279f4ee0ca25c1
1 file changed