Fix a printf format mismatch warning seen on 64-bit builds.
Cc: Ćukasz Majewski <l.majewski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
 
                        /* If an error occurred, report it and its position */
                        if (nwritten < amount) {
-                               printf("nwritten:%d amount:%d\n", nwritten,
+                               printf("nwritten:%zd amount:%u\n", nwritten,
                                       amount);
                                curlun->sense_data = SS_WRITE_ERROR;
                                curlun->info_valid = 1;