syslink_bridge: include <cstring> to fix compilation issue

GCC error:
error: 'memcpy' was not declared in this scope

src/modules/syslink/syslink_bridge.cpp

@@ -39,6 +39,7 @@
  */
 
 #include "syslink_main.h"
+#include <cstring>
 
 
 

src/modules/syslink/syslink_memory.cpp

@@ -36,6 +36,8 @@
 
 #include "drv_deck.h"
 
+#include <cstring>
+
 
 SyslinkMemory::SyslinkMemory(Syslink *link) :
 	CDev("SyslinkMemory", DECK_DEVICE_PATH),