msm: sdio: Close all open channels on shutdown.

1.Add channel_close(ch, flush_flag) to turn off flush when shutdown
2. separate reset and shutdown callbacks
3. close all opened channels when shutdown

Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Change-Id: I779f1802860f07eb56aef83de445072c739443dc
1 file changed