pipe-loader: fix zink driinfo header path

this feels like a compiler bug, but somehow just specifying the
shorter path ends up with a broken/partial header include

Fixes: d760a9151b ("gallium: Learn about kopper")

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18858>
(cherry picked from commit 8da9e65500)

.pick_status.json

@@ -1282,7 +1282,7 @@
         "description": "pipe-loader: fix zink driinfo header path",
         "nominated": true,
         "nomination_type": 1,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "d760a9151b73d1998fceff38fb1c642e4d77bf67"
     },

src/gallium/auxiliary/pipe-loader/pipe_loader_sw.c

@@ -404,7 +404,7 @@ pipe_loader_sw_get_driconf(struct pipe_loader_device *dev, unsigned *count)
 
 #if defined(HAVE_DRI) && defined(HAVE_ZINK)
 static const driOptionDescription zink_driconf[] = {
-      #include "zink/driinfo_zink.h"
+      #include "gallium/drivers/zink/driinfo_zink.h"
 };
 
 static const struct driOptionDescription *