soc: qcom: socinfo: add support for sdm429 and sdm439

Add support for getting soc-id and dummy handle on sdm429
and sdm439.

Change-Id: I93b9578bed5b0d9b18d7496fcda69c1cdc4c949b
Signed-off-by: Jingbiao Lu <jingbiao@codeaurora.org>
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>