rtc twl4030: rename ioctl function when RTC_INTF_DEV=n

Fix build error when RTC_INTF_DEV=n:

drivers/rtc/rtc-twl4030.c:402: error: 'twl4030_rtc_ioctl' undeclared here (not in a function)
make[3]: *** [drivers/rtc/rtc-twl4030.o] Error 1
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Samuel Ortiz <sameo@openedhand.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-twl4030.c

@@ -337,7 +337,7 @@ static int twl4030_rtc_ioctl(struct device *dev, unsigned int cmd,
 }
 
 #else
-#define	omap_rtc_ioctl	NULL
+#define	twl4030_rtc_ioctl	NULL
 #endif
 
 static irqreturn_t twl4030_rtc_interrupt(int irq, void *rtc)