Modularize evdev

• Convert "options EVDEV" to "device evdev" and "device uinput", add modules for both new devices. They are isolated subsystems and do not require any compile-time changes to general kernel subsytems
• For hybrid drivers that have evdev as an optional way to deliver input events add option EVDEV_SUPPORT. Update all existing hybrid drivers to use it instead of EVDEV
• Remove no-op DECLARE_MODULE in evdev, it's not required, MODULE_VERSION is enough
• Add evdev module dependency to uinput

Submitted by: Vladimir Kondratiev <wulf@cicgroup.ru>