VOL-513: Support ASFVOLT16 Adapter in Swarm Mode -VOL-467 Phase 1 - Polling Mode

Follow up changes to do the following.

1) Remove reduntant spaces in the code
2) Change the grpc-c stream write mechanism from non-blocking to blocking
3) Increase the bal_indication queue size from 25 to 1000
4) Compilation warning fixes

Change-Id: I3917d526d4db59601ca9d8468f66f4219d735e17
diff --git a/src/asfvolt16_driver.h b/src/asfvolt16_driver.h
index 6871e2b..ab24309 100755
--- a/src/asfvolt16_driver.h
+++ b/src/asfvolt16_driver.h
@@ -26,6 +26,8 @@
 #include "bal_errno.grpc-c.h"
 #include "bal.grpc-c.h"
 
+#include <stdio.h>
+
 #define ASFVOLT_ERROR 1
 #define ASFVOLT_INFO  2
 #define ASFVOLT_DEBUG 3