ipa: Use Vector class from libcamera

Now that there is a Vector class in libcamera, use that one.

Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>

src/ipa/rkisp1/algorithms/awb.h

@@ -9,8 +9,9 @@
 
 #include <optional>
 
+#include "libcamera/internal/vector.h"
+
 #include "libipa/interpolator.h"
-#include "libipa/vector.h"
 
 #include "algorithm.h"