soc: qcom: Add VTCM handling to cdsprm driver

VTCM handling in cdsp request manager, reads the device
tree as part of platform driver registration notifier and
sends the data to guestos driver via rpmsg channel and
exposes methods to override partition mapping via
debugfs node.

Change-Id: Ie28e750f0a27f35ec114278aa0b87952ecda70f6
Acked-by: Sreekanth Gande <sgande@qti.qualcomm.com>
Signed-off-by: Bavyasritha Alahari <alahari@codeaurora.org>