Tidy up data sizes and function comment in display_options

Use inttypes.h and uint64_t to correct the code so that it will not issue
warnings on 64-bit machines where 'uint64_t' is 'unsigned long'.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/common.h

@@ -253,7 +253,19 @@ int	cpu_init(void);
 /* */
 phys_size_t initdram (int);
 int	display_options (void);
-void	print_size(unsigned long long, const char *);
+
+/**
+ * print_size() - Print a size with a suffic
+ *
+ * print sizes as "xxx KiB", "xxx.y KiB", "xxx MiB", "xxx.y MiB",
+ * xxx GiB, xxx.y GiB, etc as needed; allow for optional trailing string
+ * (like "\n")
+ *
+ * @size:	Size to print
+ * @suffix	String to print after the size
+ */
+void print_size(uint64_t size, const char *suffix);
+
 int print_buffer(ulong addr, const void *data, uint width, uint count,
 		 uint linelen);