intel/isl: Divide QPitch by 2 for 3-D stencil textures on SKL+
intel/isl: Divide QPitch by 2 for 3-D stencil textures on SKL+

Signed-off-by: Jason Ekstrand <68c46a606457643eab92053c1c05574abb26f861@jlekstrand.net>
Reviewed-by: Chad Versace <4b94d436ff8c93527a96d251ac64b06311506efe@chromium.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler