rtc: rtc-ds1553.c should use resource_size_t for base address

Currently the rtc driver, rtc-ds1552.c uses an unsigned long to store the
base mmio address of the NVRAM/RTC.  This breaks on 32-bit systems with
larger physical addresses.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-ds1553.c

@@ -61,7 +61,7 @@
 struct rtc_plat_data {
 	struct rtc_device *rtc;
 	void __iomem *ioaddr;
-	unsigned long baseaddr;
+	resource_size_t baseaddr;
 	unsigned long last_jiffies;
 	int irq;
 	unsigned int irqen;