device-notifier: add callback that can receive user_data

device-notifier: add callback that can receive user_data

typedef int (*notify_cb_udata)(void *data, void *user_data)
 >> The callback has an additional parameter, user_data, for receiving
    user data.

typedef void (*destroy_cb_udata)(void *user_data)
 >> The callback is invoked on removing notifier with parameter
    user_data.

int __register_notifier_udata(enum device_notifier_type type,
 notify_cb_udata func, void *user_data, destroy_cb_udata func_destroy,
 const char *caller)
 >> Returns negative errno on error occured. Otherwise positive integer
    that denotes notifier id, which can be used for unregistering the
    notifier.
 >> There are two additional parameters compared to the original
    register_notifier(). One is user_data, which is passed as the
    second parameter to callback and the other is func_destroy, which
    is invoked on removing notifier.
 >> It is allowed to register multiple notifier with same callback on a
    same type, because a user_data might differ even though they have
    same callback on a same type.

int __unregister_notifier_udata(int id, const char *caller)
 >> Receives notifier id and unregisters matching notifier.

Change-Id: I46d1fec98eae19dbd9aaed60dfd84f760d152b9e
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>