msm: net: Support for Removing SFE module

This change allow handling of unregister netfilter hook
while removing SFE module.

Change-Id: Ic5ba52e82179e7496d27623edf92c6e64c35d19d
Acked-by: Vinisha Varre <vvarre@qti.qualcomm.com>
Signed-off-by: Paras Singh Jain <parassin@codeaurora.org>