cam: Print one property per line

When printing camera properties, print one property per line.

Fixes: a14b6baca9 ("cam: Add option to list camera properties")
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/cam/main.cpp

@@ -284,7 +284,8 @@ int CamApp::listProperties()
 		const ControlId *id = properties::properties.at(prop.first);
 		const ControlValue &value = prop.second;
 
-		std::cout << "Property: " << id->name() << " = " << value.toString();
+		std::cout << "Property: " << id->name() << " = "
+			  << value.toString() << std::endl;
 	}
 
 	return 0;