intel/compiler/fs: Don't generate integer DWord multiply on Gen11

Like CHV et al., Gen11 does not support 32x32 -> 32/64-bit integer
multiplies.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/compiler/brw_fs.cpp

@@ -3549,11 +3549,7 @@ fs_visitor::lower_integer_multiplication()
               inst->dst.type != BRW_REGISTER_TYPE_UD))
             continue;
 
-         /* Gen8's MUL instruction can do a 32-bit x 32-bit -> 32-bit
-          * operation directly, but CHV/BXT cannot.
-          */
-         if (devinfo->gen >= 8 &&
-             !devinfo->is_cherryview && !gen_device_info_is_9lp(devinfo))
+         if (devinfo->has_integer_dword_mul)
             continue;
 
          if (inst->src[1].file == IMM &&