Staging: ipack: CONFIG_HOTPLUG is always enabled

as CONFIG_HOTPLUG is always enabled now, just remove the #ifdef logic in
the ipack core for it if was disabled.

Cc:Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Cc: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>