Fix some more printf() format issues.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/cmd_onenand.c b/common/cmd_onenand.c
index aff11d1..ce99a38 100644
--- a/common/cmd_onenand.c
+++ b/common/cmd_onenand.c
@@ -70,14 +70,14 @@
 			if (!end || end < 0)
 				end = start;
 
-			printf("Erase block from %d to %d\n", start, end);
+			printf("Erase block from %lu to %lu\n", start, end);
 
 			for (block = start; block <= end; block++) {
 				instr.addr = block << onenand_chip.erase_shift;
 				instr.len = 1 << onenand_chip.erase_shift;
 				ret = onenand_erase(&onenand_mtd, &instr);
 				if (ret) {
-					printf("erase failed %d\n", block);
+					printf("erase failed %lu\n", block);
 					break;
 				}
 			}