sansa connect bootloader: fix red

Change-Id: Ide8784e33e1671bf915b5375fb5cd8dae4e09ae6
diff --git a/bootloader/sansaconnect.c b/bootloader/sansaconnect.c
index bd6a4b7..9b637c8 100644
--- a/bootloader/sansaconnect.c
+++ b/bootloader/sansaconnect.c
@@ -31,6 +31,7 @@
 #include "version.h"
 #include "uart-target.h"
 #include "power.h"
+#include "loader_strerror.h"
 
 extern void show_logo(void);