of_device_ids are not supposed to change at runtime. All functions
working with of_device_ids provided by <linux/of.h> work with const
of_device_ids. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
  12294    1192       0   13486    34ae drivers/gpu/drm/exynos/exynos_hdmi.o

File size after constify hdmi_match_types.
   text    data     bss     dec     hex filename
  13318     176       0   13494    34b6 drivers/gpu/drm/exynos/exynos_hdmi.o

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c 
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 1ff6ab6..624c48d 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1683,7 +1683,7 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
        return hdmi_bridge_init(hdata);
 }
 
-static struct of_device_id hdmi_match_types[] = {
+static const struct of_device_id hdmi_match_types[] = {
        {
                .compatible = "samsung,exynos4210-hdmi",
                .data = &exynos4210_hdmi_driver_data,
-- 
1.9.1

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