spirv: Add support for subgroup arithmetic

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

src/compiler/spirv/spirv_to_nir.c

@@ -3313,6 +3313,10 @@ vtn_handle_preamble_instruction(struct vtn_builder *b, SpvOp opcode,
       case SpvCapabilityGroupNonUniformQuad:
          spv_check_supported(subgroup_quad, cap);
 
+      case SpvCapabilityGroupNonUniformArithmetic:
+      case SpvCapabilityGroupNonUniformClustered:
+         spv_check_supported(subgroup_arithmetic, cap);
+
       case SpvCapabilityVariablePointersStorageBuffer:
       case SpvCapabilityVariablePointers:
          spv_check_supported(variable_pointers, cap);