staging: ccree: tag debugfs init/exit func properly

The debugfs global init and exit functions were missing
__init and __exit tags, potentially wasting memory.
Fix it by properly tagging them.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>