libfdt: add fdt type definitions

In preparation for libfdt/dtc update, add the new fdt specific types.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
diff --git a/arch/powerpc/boot/of.h b/arch/powerpc/boot/of.h
index 5603320..53f8f27 100644
--- a/arch/powerpc/boot/of.h
+++ b/arch/powerpc/boot/of.h
@@ -21,7 +21,9 @@
 /* Console functions */
 void of_console_init(void);
 
+typedef u16			__be16;
 typedef u32			__be32;
+typedef u64			__be64;
 
 #ifdef __LITTLE_ENDIAN__
 #define cpu_to_be16(x) swab16(x)