hw/ide: Split qdev.c into ide-bus.c and ide-dev.c

hw/ide: Split qdev.c into ide-bus.c and ide-dev.c

qdev.c is a mixture between IDE bus specific functions and IDE device
functions. Let's split it up to make it more obvious which part is
related to bus handling and which part is related to device handling.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20240220085505.30255-3-thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>