panfrost: Enable indirect uniform indexing

It works fine, and without it, the lowering bloats GLES2 shaders (by a
factor of 20x for one shader on t-rex!)

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7615>

src/gallium/drivers/panfrost/pan_screen.c

@@ -331,7 +331,7 @@ panfrost_get_shader_param(struct pipe_screen *screen,
                 return 0;
 
         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
-                return (is_bifrost && !is_deqp) ? 0 : 1;
+                return 1;
 
         case PIPE_SHADER_CAP_SUBROUTINES:
                 return 0;