NFC: fdp: Fix unused variable warnings

Fix unused variable warnings reported on next-20180612.

Fixes: 7579d009c4a1 ("NFC: fdp: Remove __func__ from dev_dbg()")
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
1 file changed