device: Constify struct device * parameter to acpi_fill_ssdt()

.acpi_fill_ssdt() does not need to modify the device structure. This
change makes the struct device * parameter to acpi_fill_ssdt() as
const.

Change-Id: I110f4c67c3b6671c9ac0a82e02609902a8ee5d5c
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40710
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/drivers/intel/mipi_camera/camera.c

@@ -10,7 +10,7 @@
 #include <device/path.h>
 #include "chip.h"
 
-static void camera_fill_ssdt(struct device *dev)
+static void camera_fill_ssdt(const struct device *dev)
 {
 	struct drivers_intel_mipi_camera_config *config = dev->chip_info;
 	const char *scope = acpi_device_scope(dev);