[iris][regression] mesa 20.2: piglit failures on multiple platforms
These test failures were found on mesa=d4d36010 with the following shas for the testing components:
crucible=ae2fae4 cts=01928c37e deqp=ee2101f34 drm=669e1087 glcts=77ccafb56 glslang=b60e067b kc-cts=d937540 mesa=d4d36010 piglit=b7836091a spirvheaders=3fdabd0 spirvtools=7b2dd11dd vkrunner=f688a74 vulkancts=27e691f02 waffle=a1215f4
Below is each failing test and the platform(s) on which it fails:
piglit.shaders.glsl-fs-loop-while-false-03 # no bug
icl_iris, bdw_iris, tgl, gen9atom_iris, gen9_iris