i965: Reupload push and pull constants when we get new shader image unit state.

Fixes several of the
"dEQP-GLES31.functional.image_load_store*load_store*single_layer" dEQP
tests that use image formats we implement using untyped surface
messages.

Cc: mesa-stable@lists.freedesktop.org
Tested-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i965/brw_wm_surface_state.c

@@ -1364,6 +1364,11 @@ brw_upload_image_surfaces(struct brw_context *brw,
       }
 
       brw->ctx.NewDriverState |= BRW_NEW_SURFACES;
+      /* This may have changed the image metadata dependent on the context
+       * image unit state and passed to the program as uniforms, make sure
+       * that push and pull constants are reuploaded.
+       */
+      brw->NewGLState |= _NEW_PROGRAM_CONSTANTS;
    }
 }