Bug#966851: intel-graphics-compiler: FTBFS: igax.hpp:501:30: error: argument to ‘alloca’ may be too large [-Werror=alloca-larger-than=]

[Jacek Danecki]

This issue was fixed with newer IGC: 
https://github.com/intel/intel-graphics-compiler/commit/a58dd6de4c29595a0f93cff167b487d777e4559e and is in IGC release 1.0.3826

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jacek