rtc: ds1742: don't explicitly specify word_size and stride of nvmem

nvmem_register() assumes these values to be 1 if unset, so they don't
need to be set explicitly.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-ds1742.c

@@ -152,8 +152,6 @@ static int ds1742_rtc_probe(struct platform_device *pdev)
 	int ret = 0;
 	struct nvmem_config nvmem_cfg = {
 		.name = "ds1742_nvram",
-		.word_size = 1,
-		.stride = 1,
 		.reg_read = ds1742_nvram_read,
 		.reg_write = ds1742_nvram_write,
 	};