dm: Fix OF_BAD_ADDR definition

When OF_LIVE flag is enabled on a 64 bits platform, there is an
issue when dev_read_addr() is called and need to perform an address
translation using __of_translate_address().

In case of error, __of_translate_address() return's value is OF_BAD_ADDR
(wich is defined in include/dm/of.h to ((u64)-1) = 0xffffffffffffffff).
The return value of dev_read_addr() is often compared to FDT_ADDR_T_NONE
which is defined as (-1U) = 0xffffffff.
In this case the comparison is always false.

To fix this issue, define FDT_ADDR_T_NONE to (ulong)(-1) in case of
AARCH64. Update accordingly related tests.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 9a7b6a7..4b0b505 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -24,16 +24,19 @@
 typedef phys_addr_t fdt_addr_t;
 typedef phys_size_t fdt_size_t;
 
-#define FDT_ADDR_T_NONE (-1U)
 #define FDT_SIZE_T_NONE (-1U)
 
 #ifdef CONFIG_PHYS_64BIT
+#define FDT_ADDR_T_NONE ((ulong)(-1))
+
 #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)