bdinfo: Don't print out empty DRAM banks

There is no sense in printing out DRAM banks of size 0 since this means they
are empty. Skip them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

cmd/bdinfo.c

@@ -98,9 +98,11 @@ static inline void print_bi_dram(const bd_t *bd)
 	int i;
 
 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) {
-		print_num("DRAM bank",	i);
-		print_num("-> start",	bd->bi_dram[i].start);
-		print_num("-> size",	bd->bi_dram[i].size);
+		if (bd->bi_dram[i].size) {
+			print_num("DRAM bank",	i);
+			print_num("-> start",	bd->bi_dram[i].start);
+			print_num("-> size",	bd->bi_dram[i].size);
+		}
 	}
 #endif
 }