intel: Add has_bit6_swizzle to devinfo

There's no good reason to have this rather complex check in three
drivers.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13636>

src/gallium/drivers/crocus/crocus_resource.c

@@ -1643,7 +1643,7 @@ crocus_transfer_map(struct pipe_context *ctx,
    memset(map, 0, sizeof(*map));
    map->dbg = &ice->dbg;
 
-   map->has_swizzling = ((struct crocus_screen *)ctx->screen)->has_swizzling;
+   map->has_swizzling = screen->devinfo.has_bit6_swizzle;
    pipe_resource_reference(&xfer->resource, resource);
    xfer->level = level;
    xfer->usage = usage;