libcamera: controls: Generate an array of valid values

For each Control that supports enumerated values generate an array
of ControlValue which contains the full list of valid values.

At the expense of a slight increase in memory occupation this change
allows the construction of the ControlInfo associated with a Control
from the values list, defaulting the minimum and maximum values
reported by the ControlInfo.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/libcamera/control_ids.cpp.in

@@ -8,6 +8,7 @@
  */
 
 #include <libcamera/control_ids.h>
+#include <libcamera/controls.h>
 
 /**
  * \file control_ids.h