Add Intel Whitetip Mountain 2 mainboard

This is mostly a copy of Whitetip Mountain 1 with specific GPIO
map for this Customer Reference Board (CRB).

This mainboard currently has basic funcionality and is able to
boot a Linux Kernel but many of the new Haswell ULT specific
devices are not yet enabled.

Change-Id: I999452d86f00a2c245fa39b1b76080f6a3b1e352
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/2725
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/intel/Kconfig b/src/mainboard/intel/Kconfig
index 0000957..3594a30 100644
--- a/src/mainboard/intel/Kconfig
+++ b/src/mainboard/intel/Kconfig
@@ -23,6 +23,8 @@
 	bool "Basking Ridge CRB"
 config BOARD_INTEL_WTM1
 	bool "Whitetip Mountain 1 CRB"
+config BOARD_INTEL_WTM2
+	bool "Whitetip Mountain 2 CRB"
 
 endchoice
 
@@ -36,6 +38,7 @@
 source "src/mainboard/intel/truxton/Kconfig"
 source "src/mainboard/intel/xe7501devkit/Kconfig"
 source "src/mainboard/intel/wtm1/Kconfig"
+source "src/mainboard/intel/wtm2/Kconfig"
 
 config MAINBOARD_VENDOR
 	string