ipa: ipu3: Support return values from configure()

The IPU3 IPA interface does not define a return value from configure().
This prevents errors from being reported back to the pipeline handler
when they occur in the IPA.

Update the IPU3 IPA interface and add return values to the checks in
IPAIPU3::configure() accordingly

Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/ipa/ipu3.mojom

@@ -42,7 +42,7 @@ interface IPAIPU3Interface {
 	start() => (int32 ret);
 	stop();
 
-	configure(IPAConfigInfo configInfo) => ();
+	configure(IPAConfigInfo configInfo) => (int32 ret);
 
 	mapBuffers(array<libcamera.IPABuffer> buffers);
 	unmapBuffers(array<uint32> ids);