wtm2: Convert to use soc/intel/broadwell

Convert wtm2 board to use the broadwell soc chipset.

BUG=chrome-os-partner:28234
TEST=Build and boot on wtm2 with haswell and broadwell
CQ-DEPEND=CL:201067
CQ-DEPEND=CL:*164226

Original-Change-Id: Ifb0db15cc23a3b66430b32b2ad3f8ab2fb03c4c3
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/201070
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit e1073c6e34ab2d436faf46dde5f6b3bf99692866)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I925b91a8de980b1768f03eaee915a7fd91fbdbda
Reviewed-on: http://review.coreboot.org/8001
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/intel/wtm2/Kconfig

@@ -2,10 +2,7 @@ if BOARD_INTEL_WTM2
 
 config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
-	select CPU_INTEL_SOCKET_RPGA989
-	select NORTHBRIDGE_INTEL_HASWELL
-	select SOUTHBRIDGE_INTEL_LYNXPOINT
-	select INTEL_LYNXPOINT_LP
+	select SOC_INTEL_BROADWELL
 	select BOARD_ROMSIZE_KB_8192
 	select HAVE_ACPI_TABLES
 	select HAVE_OPTION_TABLE
@@ -16,6 +13,16 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select MONOTONIC_TIMER_MSR
 	select INTEL_INT15
 
+	select CHROMEOS_RAMOOPS_DYNAMIC
+
+config VBOOT_RAMSTAGE_INDEX
+	hex
+	default 0x1
+
+config VBOOT_REFCODE_INDEX
+	hex
+	default 0x2
+
 config MAINBOARD_DIR
 	string
 	default intel/wtm2
@@ -24,9 +31,6 @@ config MAINBOARD_PART_NUMBER
 	string
 	default "WHITETIP MOUNTAIN 2"
 
-config MMCONF_BASE_ADDRESS
-	hex
-	default 0xf0000000
 
 config MAX_CPUS
 	int