Correction of includes for non-system header files

Corrects includes for programmer-defined header files (using "" instead of <>).

Change-Id: I84f681c46c2d2e9bbbac77155cb7ae3a4cb793ce
Signed-off-by: Robert Rostohar <Robert.Rostohar@arm.com>
diff --git a/interface/include/tfm_ns_svc.h b/interface/include/tfm_ns_svc.h
index 366a70a..def0c2f 100644
--- a/interface/include/tfm_ns_svc.h
+++ b/interface/include/tfm_ns_svc.h
@@ -6,7 +6,7 @@
  */
 
 #include <stdio.h>
-#include <cmsis_compiler.h>
+#include "cmsis_compiler.h"
 
 #ifndef __TFM_NS_SVC_H__
 #define __TFM_NS_SVC_H__