fel: Change order of includes

For Windows portable_endian.h relies on and includes <winsock2.h>.
Thus it needs to be requested first, otherwise other includes might
pull in <windows.h> and cause a preprocessor warning / compilation
failure (observed with MinGW).
Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>

fel.c

@@ -15,6 +15,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "common.h"
+#include "portable_endian.h"
+#include "progress.h"
+
 #include <libusb.h>
 #include <stdint.h>
 #include <stdbool.h>
@@ -28,10 +32,6 @@
 #include <unistd.h>
 #include <sys/stat.h>
 
-#include "common.h"
-#include "portable_endian.h"
-#include "progress.h"
-
 static const uint16_t AW_USB_VENDOR_ID  = 0x1F3A;
 static const uint16_t AW_USB_PRODUCT_ID = 0xEFE8;