defconfig: msm8996 Enable t-base kernel driver

Enable t-base-400 dlkm compilation used by the t-base daemon to
communicate with the secure world for the 8996 target.

Change-Id: I8e8a3a911cef8197b1f10f9af2c9ff68e43bf55e
Acked-by: Tony Hamilton <tonyh@qti.qualcomm.com>
Signed-off-by: Puneet Mishra <puneetm@codeaurora.org>