media: ipu3: Use MODULE_FIRMWARE to add firmware files metadata

The ipu3 driver requests firmware files but does not use the
MODULE_FIRMWARE macro to show them in the module metadata

[mchehab: add missing firmware file: IMGU_FW_NAME_IPU_20161208]
Link: https://lore.kernel.org/linux-media/20230914135100.19911-1-victor.gonzalo@anddroptable.netSigned-off-by: Víctor Gonzalo <victor.gonzalo@anddroptable.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/ipu3/ipu3.c

@@ -13,6 +13,7 @@
 #include <linux/pm_runtime.h>
 
 #include "ipu3.h"
+#include "ipu3-css-fw.h"
 #include "ipu3-dmamap.h"
 #include "ipu3-mmu.h"
 
@@ -860,3 +861,6 @@ MODULE_AUTHOR("Yuning Pu");
 MODULE_AUTHOR("Yong Zhi <yong.zhi@intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Intel ipu3_imgu PCI driver");
+MODULE_FIRMWARE(IMGU_FW_NAME);
+MODULE_FIRMWARE(IMGU_FW_NAME_20161208);
+MODULE_FIRMWARE(IMGU_FW_NAME_IPU_20161208);