CRIS: Move common Kconfig variable ETRAX_RTC to arch independet Kconfig.

arch/cris/Kconfig

@@ -259,6 +259,18 @@ menu "Drivers for built-in interfaces"
 source arch/cris/arch-v10/drivers/Kconfig
 source arch/cris/arch-v32/drivers/Kconfig
 
+config ETRAX_RTC
+	bool "Real Time Clock support"
+	depends on ETRAX_I2C
+	help
+	  Enables drivers for the Real-Time Clock battery-backed chips on
+	  some products. The kernel reads the time when booting, and
+	  the date can be set using ioctl(fd, RTC_SET_TIME, &rt) with rt a
+	  rtc_time struct (see <file:include/asm-cris/rtc.h>) on the /dev/rtc
+	  device.  You can check the time with cat /proc/rtc, but
+	  normal time reading should be done using libc function time and
+	  friends.
+
 choice
 	prompt "RTC chip"
 	depends on ETRAX_RTC

arch/cris/arch-v10/drivers/Kconfig

@@ -596,18 +596,6 @@ config ETRAX_PB_CHANGEABLE_BITS
 	  Bit set = changeable.
 	  You probably want 00 here.
 
-config ETRAX_RTC
-	bool "Real Time Clock support"
-	depends on ETRAX_ARCH_V10
-	help
-	  Enables drivers for the Real-Time Clock battery-backed chips on
-	  some products. The kernel reads the time when booting, and
-	  the date can be set using ioctl(fd, RTC_SET_TIME, &rt) with rt a
-	  rtc_time struct (see <file:include/asm-cris/rtc.h>) on the /dev/rtc
-	  device, major 121.  You can check the time with cat /proc/rtc, but
-	  normal time reading should be done using libc function time and
-	  friends.
-
 config ETRAX_DS1302_RST_ON_GENERIC_PORT
 	bool "DS1302 RST on Generic Port"
 	depends on ETRAX_DS1302

arch/cris/arch-v32/drivers/Kconfig

@@ -497,12 +497,6 @@ config ETRAX_V32_I2C_CLK_PORT
 	help
 	  The pin to use for I2C clock.
 
-config ETRAX_RTC
-	bool "Real Time Clock support"
-	depends on ETRAX_ARCH_V32 && ETRAX_I2C
-	help
-	  Enabled RTC support.
-
 config ETRAX_GPIO
 	bool "GPIO support"
 	depends on ETRAX_ARCH_V32