drm/panel: panel-samsung-s6e88a0-ams427ap24: Fix includes

Include <linux/property.h> to declare device_property_read_bool() and
<linux/mod_devicetable.h> to declare struct of_device_id. Avoids the
dependency on the backlight header to include both.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250812082509.227879-1-tzimmermann@suse.de