defconfig: krypton: Add CFG80211 regdb

This config generates an internal data structure representing the
wireless regulatory rules described in net/wireless/db.txt and
includes code to query that database. This is required for 802.11
regulatory domain support.

Change-Id: Ia83021173e82712416c95f7c247e546925a68a54
Signed-off-by: Prashanth Bhatta <bhattap@codeaurora.org>