drm/bridge: make drm_bridge_funcs const

Make these structures const as they are only stored in the funcs field
of drm_bridge structure, which is of type const.
Done using Coccinelle.

Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Bhumika Goyal <[e-mail]>
Signed-off-by: Archit Taneja <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

···
 	return ret;
 }
 
-static struct drm_bridge_funcs adv7511_bridge_funcs = {
+static const struct drm_bridge_funcs adv7511_bridge_funcs = {
 	.enable = adv7511_bridge_enable,
 	.disable = adv7511_bridge_disable,
 	.mode_set = adv7511_bridge_mode_set,

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

···
 	return drm_bridge_attach(bridge->encoder, dsi->panel_bridge, bridge);
 }
 
-static struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
+static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
 	.mode_set     = dw_mipi_dsi_bridge_mode_set,
 	.enable	      = dw_mipi_dsi_bridge_enable,
 	.post_disable = dw_mipi_dsi_bridge_post_disable,