rtc: s3c: Integrate Exynos3250 into S3C6410

There are now no differences between RTC on Exynos3250 and S3C6410.
Merge everything into one so duplicated code could be removed.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Chanwoo Choi <[e-mail]>
Acked-by: Alexandre Belloni <[e-mail]>
Reviewed-by: Javier Martinez Canillas <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Alexandre Belloni <[e-mail]>

drivers/rtc/rtc-s3c.c

···
 	.disable		= s3c6410_rtc_disable,
 };
 
-static struct s3c_rtc_data const exynos3250_rtc_data = {
-	.max_user_freq		= 32768,
-	.needs_src_clk		= true,
-	.irq_handler		= s3c6410_rtc_irq,
-	.set_freq		= s3c6410_rtc_setfreq,
-	.enable_tick		= s3c6410_rtc_enable_tick,
-	.save_tick_cnt		= s3c6410_rtc_save_tick_cnt,
-	.restore_tick_cnt	= s3c6410_rtc_restore_tick_cnt,
-	.enable			= s3c24xx_rtc_enable,
-	.disable		= s3c6410_rtc_disable,
-};
-
 static const struct of_device_id s3c_rtc_dt_match[] = {
 	{
 		.compatible = "samsung,s3c2410-rtc",
···
 		.data = (void *)&s3c6410_rtc_data,
 	}, {
 		.compatible = "samsung,exynos3250-rtc",
-		.data = (void *)&exynos3250_rtc_data,
+		.data = (void *)&s3c6410_rtc_data,
 	},
 	{ /* sentinel */ },
 };