add some missing includes

avoids forward referenced enums, and includes standard type defns

Signed-off-by: Khazhismel Kumykov <khazhy@google.com>

include/iscsi-private.h

@@ -25,6 +25,8 @@
 #define ssize_t SSIZE_T
 #endif
 
+#include "iscsi.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif

include/scsi-lowlevel.h

@@ -23,6 +23,9 @@
 #define EXTERN
 #endif
 
+#include <stdint.h>
+#include <sys/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif