isl: Assert that alignments are not 0 for isl_align
isl: Assert that alignments are not 0 for isl_align

Signed-off-by: Jordan Justen <a79006884ba9cf5f4f7fcbb92a15b208780d8c97@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler