HSIC_HOST: Wait for BAM Pipe to be empty before suspend

HSIC_CONS release notification doesn't confirm that all IPA HSIC BAM pipes'
are empty used for HSIC host mode functionality. In some of regression
testing, it has been found that HSIC host is being suspended when there is
data pending in HSIC IPA BAM pipe which causes BAM data stall issue. Hence
this change adds required support to check all used BAM pipes' state with
HSIC Host mode before performing suspend and notifying IPA driver to switch
of IPA clocks.

This change also checks pipe state before resuming root hub in resume
sequeunce, and would crash device if there is any pending data i.e. data is
written to HSIC BAM when HSIC host was suspended.

CRs-Fixed: 711785
Change-Id: I4721c38273c2b23584a192457517139371cdbce2
Signed-off-by: Mayank Rana <mrana@codeaurora.org>