Fix musl build
This patch fixes cross-compiling U-Boot tools with the musl C library:
* including <sys/types.h> is needed for ulong
* defining _GNU_SOURCE is needed for loff_t
Tested for target at91sam9261ek_dataflash_cs3.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/tools/imagetool.h b/tools/imagetool.h
index 3e15b4e..b7874f4 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -16,6 +16,7 @@
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
+#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <u-boot/sha1.h>