Lenovo X60: Add CMOS defaults.

After removing power and the CMOS Battery, putting it back
  and booting coreboot we have:
     # ./nvramtool -a
     boot_option = Fallback
     last_boot = Fallback
     baud_rate = 115200
     debug_level = Spew
     hyper_threading = Enable
     nmi = Enable
     boot_devices = ''
     boot_default = 0x40
     cmos_defaults_loaded = Yes
     lpt = Enable
     volume = 0xff
     tft_brightness = 0xbf
     first_battery = Primary
     bluetooth = Enable

The code for handling the invalid CMOS space in mainboard.c
  is now useless and so it was removed.

Change-Id: Ic57a14eeeea861aa034cb0884795b0152757bf5b
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/3335
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/mainboard/lenovo/x60/Kconfig b/src/mainboard/lenovo/x60/Kconfig
index 1431a2f..5ecad2f 100644
--- a/src/mainboard/lenovo/x60/Kconfig
+++ b/src/mainboard/lenovo/x60/Kconfig
@@ -14,6 +14,7 @@
 	select EC_LENOVO_H8
 	select DRIVERS_ICS_954309
 	select HAVE_OPTION_TABLE
+	select HAVE_CMOS_DEFAULT
 	select HAVE_PIRQ_TABLE
 	select HAVE_MP_TABLE
 	select MMCONF_SUPPORT