defconfig: sdm845: Enable CDSP loader

Enable CDSP loader driver to be able to load CDSP image for SDM845
targets.

Change-Id: I56714867ce7349cbcf2ec408bc2fbfe62b38333d
Acked-by: Viswanatham Paduchuri <vpaduchu@qti.qualcomm.com>
Signed-off-by: Sathish Ambley <sathishambley@codeaurora.org>