defconfig: Enable cellular hints in regulatory cfg80211

The user-space may send regulatory hint that has cellular sub-type
enabled. To process such events, enable
CONFIG_CFG80211_REG_CELLULAR_HINTS.

Change-Id: Ib947e1327019665ff7ca29f54227722e940890f3
Signed-off-by: Amar Singhal <asinghal@codeaurora.org>
CRs-Fixed: 2201959