[MIPS] Don't use genrtc.

The only pseudo-legitimate MIPS user of genrtc was a systems that doesn't
have an RTC in hardware at all.  At this point faking one is a little
pointless ...

arch/mips/configs/yosemite_defconfig

@@ -592,8 +592,6 @@ CONFIG_LEGACY_PTY_COUNT=256
 # CONFIG_WATCHDOG is not set
 # CONFIG_HW_RANDOM is not set
 # CONFIG_RTC is not set
-CONFIG_GEN_RTC=y
-CONFIG_GEN_RTC_X=y
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
 # CONFIG_APPLICOM is not set

drivers/char/Kconfig

@@ -815,7 +815,7 @@ config SGI_IP27_RTC
 
 config GEN_RTC
 	tristate "Generic /dev/rtc emulation"
-	depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC && !FRV && !S390 && !SUPERH
+	depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you

include/asm-mips/rtc.h

-/*
- * include/asm-mips/rtc.h
- *
- * (Really an interface for drivers/char/genrtc.c)
- *
- * Copyright (C) 2004 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * Please read the COPYING file for all license details.
- */
-
-#ifndef _MIPS_RTC_H
-#define _MIPS_RTC_H
-
-#ifdef __KERNEL__
-
-#include <linux/rtc.h>
-#include <asm/time.h>
-
-#define RTC_PIE 0x40            /* periodic interrupt enable */
-#define RTC_AIE 0x20            /* alarm interrupt enable */
-#define RTC_UIE 0x10            /* update-finished interrupt enable */
-
-/* some dummy definitions */
-#define RTC_BATT_BAD 0x100      /* battery bad */
-#define RTC_SQWE 0x08           /* enable square-wave output */
-#define RTC_DM_BINARY 0x04      /* all time/date values are BCD if clear */
-#define RTC_24H 0x02            /* 24 hour mode - else hours bit 7 means pm */
-#define RTC_DST_EN 0x01         /* auto switch DST - works f. USA only */
-
-static inline unsigned int get_rtc_time(struct rtc_time *time)
-{
-	unsigned long nowtime;
-
-	nowtime = rtc_mips_get_time();
-	to_tm(nowtime, time);
-	time->tm_year -= 1900;
-
-	return RTC_24H;
-}
-
-static inline int set_rtc_time(struct rtc_time *time)
-{
-	unsigned long nowtime;
-	int ret;
-
-	nowtime = mktime(time->tm_year+1900, time->tm_mon+1,
-			time->tm_mday, time->tm_hour, time->tm_min,
-			time->tm_sec);
-	ret = rtc_mips_set_time(nowtime);
-
-	return ret;
-}
-
-static inline unsigned int get_rtc_ss(void)
-{
-	struct rtc_time h;
-
-	get_rtc_time(&h);
-	return h.tm_sec;
-}
-
-static inline int get_rtc_pll(struct rtc_pll_info *pll)
-{
-	return -EINVAL;
-}
-
-static inline int set_rtc_pll(struct rtc_pll_info *pll)
-{
-	return -EINVAL;
-}
-#endif
-#endif