device: Constify struct device * parameter to acpi_inject_dsdt

.acpi_inject_dsdt() does not need to modify the device
structure. Hence, this change makes the struct device * parameter to
acpi_inject_dsdt as const.

Change-Id: I3b096d9a5a9d649193e32ea686d5de9f78124997
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40711
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/vendorcode/google/chromeos/acpi.c

@@ -35,7 +35,7 @@ void chromeos_acpi_gpio_generate(const struct cros_gpio *gpios, size_t num)
 	acpigen_pop_len();
 }
 
-void chromeos_dsdt_generator(struct device *dev)
+void chromeos_dsdt_generator(const struct device *dev)
 {
 	mainboard_chromeos_acpi_generate();
 }

src/vendorcode/google/chromeos/chromeos.h

@@ -70,7 +70,7 @@ void chromeos_acpi_gpio_generate(const struct cros_gpio *gpios, size_t num);
  */
 void mainboard_chromeos_acpi_generate(void);
 #if CONFIG(CHROMEOS)
-void chromeos_dsdt_generator(struct device *dev);
+void chromeos_dsdt_generator(const struct device *dev);
 #else
 #define chromeos_dsdt_generator NULL
 #endif