mach-socfpga: do not overlap defines with lwip

Fix compilation issue with overlapping lwip and march defines.

Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-socfpga/wrap_handoff_soc64.c b/arch/arm/mach-socfpga/wrap_handoff_soc64.c
index e7cb5ea..df0701e 100644
--- a/arch/arm/mach-socfpga/wrap_handoff_soc64.c
+++ b/arch/arm/mach-socfpga/wrap_handoff_soc64.c
@@ -10,6 +10,15 @@
 #include <errno.h>
 #include "log.h"
 
+#ifndef __ASSEMBLY__
+#include <asm/types.h>
+enum endianness {
+	LITTLE_ENDIAN = 0,
+	BIG_ENDIAN,
+	UNKNOWN_ENDIANNESS
+};
+#endif
+
 static enum endianness check_endianness(u32 handoff)
 {
 	switch (handoff) {