drm/panel: s6e3ha8: add static modifier to supply list

Add 'static' modifier to panel supply list.

Reported-by: kernel test robot <[e-mail]>
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Fixes: 779679d3c164 ("drm/panel: Add support for S6E3HA8 panel driver")
Signed-off-by: Dzmitry Sankouski <[e-mail]>
Reviewed-by: Neil Armstrong <[e-mail]>
Link: https://lore.kernel.org/r/20241[e-mail]
Signed-off-by: Neil Armstrong <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/20241[e-mail]

drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c

···
 	struct regulator_bulk_data *supplies;
 };
 
-const struct regulator_bulk_data s6e3ha8_supplies[] = {
+static const struct regulator_bulk_data s6e3ha8_supplies[] = {
 	{ .supply = "vdd3" },
 	{ .supply = "vci" },
 	{ .supply = "vddr" },