devel/intel-graphics-compiler: update to 1.0.8173

Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7152
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7181
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7423
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7683
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7712
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7781
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.7862
Changes:	https://github.com/intel/intel-graphics-compiler/releases/tag/igc-1.0.8173
Reported by:	GitHub (watch releases)