ASoC: Intel: Fix stream volume set no effect issue on Broadwell

The volume setting control for capture stream doesn't take effect on intel
Broadwell platform. Root cause it at 2 points:
1. set stream volume with channel=2 is wrongly bapassed;
2. the saved stream volume should be restored after stream is commit.

Here correct these 2 items to fix the stream volume set issue.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/intel/sst-haswell-ipc.h b/sound/soc/intel/sst-haswell-ipc.h
index 387511f..138e894 100644
--- a/sound/soc/intel/sst-haswell-ipc.h
+++ b/sound/soc/intel/sst-haswell-ipc.h
@@ -24,6 +24,7 @@
 #define SST_HSW_NO_CHANNELS		4
 #define SST_HSW_MAX_DX_REGIONS		14
 #define SST_HSW_DX_CONTEXT_SIZE        (640 * 1024)
+#define SST_HSW_CHANNELS_ALL		0xffffffff
 
 #define SST_HSW_FW_LOG_CONFIG_DWORDS	12
 #define SST_HSW_GLOBAL_LOG		15