msm: ipa3: Fix to handle packets over MHI pipe in SSR

Make a change to handle packets coming from MHI pipe
when modem is in SSR to clean up the host state. Otherwise
host state is not clean up as packets are not processed by
IPA.

Change-Id: I4f30301d390b36bb673e0006b9f58a943b191fd8
Signed-off-by: Chaitanya Pratapa <cpratapa@codeaurora.org>