defconfig: kona: add Android and RmNet required network options

Adds networking options required by base Android kernel configs
and the new RmNet driver related features.

Change-Id: Ia99dc0ae59d33db46f0216e8447e3f7112223cea
Acked-by: Ryan Chapman <rchapman@qti.qualcomm.com>
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>