usb: device_next: uvc: fix public API include

The public API file <zephyr/usb/class/usbd_uvc.h> lacked an include
to <zephyr/drivers/video.h> making it fail depending on the order of
the includes.

Signed-off-by: Josuah Demangeon <[email protected]>

Author: Josuah Demangeon

include/zephyr/usb/class/usbd_uvc.h

@@ -13,6 +13,7 @@
 #define ZEPHYR_INCLUDE_USB_CLASS_USBD_UVC_H
 
 #include <zephyr/device.h>
+#include <zephyr/drivers/video.h>
 
 /**
  * @brief USB Video Class (UVC) device API