fdtdec: Add cpu_to_fdt_{addr, size}() macros

These macros are useful for converting the endianness of variables of
type fdt_addr_t and fdt_size_t.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/include/fdtdec.h b/include/fdtdec.h
index ad00f79..be34dca 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -27,11 +27,15 @@
 #define FDT_ADDR_T_NONE (-1U)
 #define fdt_addr_to_cpu(reg) be64_to_cpu(reg)
 #define fdt_size_to_cpu(reg) be64_to_cpu(reg)
+#define cpu_to_fdt_addr(reg) cpu_to_be64(reg)
+#define cpu_to_fdt_size(reg) cpu_to_be64(reg)
 typedef fdt64_t fdt_val_t;
 #else
 #define FDT_ADDR_T_NONE (-1U)
 #define fdt_addr_to_cpu(reg) be32_to_cpu(reg)
 #define fdt_size_to_cpu(reg) be32_to_cpu(reg)
+#define cpu_to_fdt_addr(reg) cpu_to_be32(reg)
+#define cpu_to_fdt_size(reg) cpu_to_be32(reg)
 typedef fdt32_t fdt_val_t;
 #endif