i965/fs: Hook up SIMD lowering to unroll surface instructions of unsupported width.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

src/mesa/drivers/dri/i965/brw_fs.cpp

@@ -4073,6 +4073,11 @@ get_lowered_simd_width(const struct brw_device_info *devinfo,
       else
          return inst->exec_size;
 
+   case SHADER_OPCODE_TYPED_ATOMIC_LOGICAL:
+   case SHADER_OPCODE_TYPED_SURFACE_READ_LOGICAL:
+   case SHADER_OPCODE_TYPED_SURFACE_WRITE_LOGICAL:
+      return 8;
+
    default:
       return inst->exec_size;
    }