iwlwifi: dbg_ini: use new API in dump info

Make dump info region use new API.
debug_info_tlv_list list will be initialize in a future patch once the
driver will start using it.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>