gfauto: change default llpc config (#968)
gfauto: change default llpc config (#968)

Disable SPIR-V validation in the default LLPC configuration, as we validate shaders using a more recent version of spirv-val and we may also have extra spirv-val arguments. Thus, LLPC SPIR-V validation errors are not interesting.
google/graphicsfuzz,google/graphicsfuzz,google/graphicsfuzz,google/graphicsfuzz,google/graphicsfuzz,google/graphicsfuzz,google/graphicsfuzz