fdtdec: Fix the types of addr and size in fdtdec_add_reserved_memory()

fdtdec_get_addr_size() expects size is of type 'fdt_size_t', and
return value is of type 'fdt_addr_t'. Adjust their types accordingly.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 1f2b763..42f7a25 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1294,7 +1294,8 @@
 	/* find a matching node and return the phandle to that */
 	fdt_for_each_subnode(node, blob, parent) {
 		const char *name = fdt_get_name(blob, node, NULL);
-		phys_addr_t addr, size;
+		fdt_addr_t addr;
+		fdt_size_t size;
 
 		addr = fdtdec_get_addr_size(blob, node, "reg", &size);
 		if (addr == FDT_ADDR_T_NONE) {