NFC: Add support for core init command

NFC driver currently have support for
targtes with NQ4xx and later NFC HW.
Targets having NQ3xx or older HW do not
support NCI 2.0 specifications.

Add support to probe device node on
targets with NQ3xx or older NFC HW.

Change-Id: I179a536cf68dea72f125f730d55fdb6d559fbe2c
Signed-off-by: Bhuvan Varshney <bvarshne@codeaurora.org>