qcom,dload-mode platform device is created from scm driver on
scm driver probe and now there is no need to maintain their
device tree node in SoC specific device tree.
Change-Id: Id79e5f67c57940b37bdfa151c90a9e1b02eb8192
Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>