- do not ignore last flag buffer in last flag not allowed
case also
- ignore stop command if input port is not streaming
instead of returning -EBUSY error.
- defer input port settings change in few states instead of
ignoring it.
Change-Id: I705f0c8ae2da899a5d262f6246aa65de5591ac26
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>