[MTD] [TESTS] Fix some size_t printk format warnings

Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/tests/mtd_subpagetest.c

@@ -125,7 +125,7 @@ static int write_eraseblock(int ebnum)
 		       (long long)addr);
 		if (written != subpgsize) {
 			printk(PRINT_PREF "  write size: %#x\n", subpgsize);
-			printk(PRINT_PREF "  written: %#x\n", written);
+			printk(PRINT_PREF "  written: %#zx\n", written);
 		}
 		return err ? err : -1;
 	}
@@ -139,7 +139,7 @@ static int write_eraseblock(int ebnum)
 		       (long long)addr);
 		if (written != subpgsize) {
 			printk(PRINT_PREF "  write size: %#x\n", subpgsize);
-			printk(PRINT_PREF "  written: %#x\n", written);
+			printk(PRINT_PREF "  written: %#zx\n", written);
 		}
 		return err ? err : -1;
 	}
@@ -164,7 +164,7 @@ static int write_eraseblock2(int ebnum)
 			if (written != subpgsize) {
 				printk(PRINT_PREF "  write size: %#x\n",
 				       subpgsize * k);
-				printk(PRINT_PREF "  written: %#08x\n",
+				printk(PRINT_PREF "  written: %#08zx\n",
 				       written);
 			}
 			return err ? err : -1;

drivers/mtd/tests/mtd_torturetest.c

@@ -450,7 +450,7 @@ static void report_corrupt(unsigned char *read, unsigned char *written)
 		printk("-------------------------------------------------------"
 		       "----------------------------------\n");
 
-		printk(PRINT_PREF "Page %d has %d bytes/%d bits failing verify,"
+		printk(PRINT_PREF "Page %zd has %d bytes/%d bits failing verify,"
 		       " starting at offset 0x%x\n",
 		       (mtd->erasesize - check_len + i) / pgsize,
 		       bytes, bits, first);