soc: qcom: bgdaemon: add delay in SUBSYS_AFTER_SHUTDOWN

Add delay for SPI bus synchronization in SUBSYS_AFTER_SHUTDOWN
inplace of SUBSYS_BEFORE_SHUTDOWN. This helps PIL to handle
SUBSYS_BEFORE_SHUTDOWN quickly.

Change-Id: Icb9a322f1944ca24ca3c6f032a1d9b4889544d0e
Signed-off-by: Ajit Kumar <kajit@codeaurora.org>
Signed-off-by: Ramesh Yadav Javadi <javadi@codeaurora.org>