defconfig: 8610: enable remote debugger driver

The Remote Debugger Driver allows a debugger running on a host
PC to communicate with a remote stub running on peripheral
subsystems. Enable this driver for MSM8610.

Change-Id: Iec64c2d5b2c1d217e01cb399895e49710d5e5dbe
Acked-by: Vivek Iyer <viyer@qti.qualcomm.com>
Acked-by: Mahesh Rohera <mrohera@qti.qualcomm.com>
Acked-by: Jay Jayanna <jjayanna@qti.qualcomm.com>
Signed-off-by: Aparna Das <adas@codeaurora.org>