defconfig: Enable EUD driver for Kona

Enable compilation of EUD driver for Kona. EUD (Embedded USB Debugger)
provides on chip support for USB-based debug and trace capabilities.

Change-Id: Ie82c196f76fd39a2f6d2d943783101c0a69d041d
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>