HID: apple: Swap Control and Command keys on Apple keyboards

This patch allows users to swap the control and command keys. This can be
useful for the Mac users who are used to using Command instead of Control
in macOS for various commonly used shortcuts.

Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>