rtc: st-lpc: Remove struct resource from struct st_rtc

struct resource in struct st_rtc is not used, remove it.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Link: https://lore.kernel.org/r/20191123091241.1905-1-nobuhiro1.iwamatsu@toshiba.co.jpSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-st-lpc.c

@@ -41,7 +41,6 @@
 struct st_rtc {
 	struct rtc_device *rtc_dev;
 	struct rtc_wkalrm alarm;
-	struct resource *res;
 	struct clk *clk;
 	unsigned long clkrate;
 	void __iomem *ioaddr;