misc: fs_loader: Fix compiler warning

Fix compiler warning

drivers/misc/fs_loader.c:193:9: warning: format ‘%d’ expects
argument of type ‘int’, but argument 5 has type ‘size_t
{aka long unsigned int}’ [-Wformat=]

Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/misc/fs_loader.c

@@ -190,7 +190,7 @@ static int fw_get_filesystem_firmware(struct device_platdata *plat,
 			fw_priv->offset, firmware->size, &actread);
 
 	if (ret) {
-		debug("Error: %d Failed to read %s from flash %lld != %d.\n",
+		debug("Error: %d Failed to read %s from flash %lld != %zu.\n",
 		      ret, fw_priv->name, actread, firmware->size);
 	} else {
 		ret = actread;