southbridge/intel/ibexpeak: use common Intel ACPI hardware definitions

Transition to using the common Intel ACPI hardware definitions
generic ACPI definitions.

BUG=chrome-os-partner:54977

Change-Id: I65270ddcb612f9c63d7dbb2409e4395f96e10a51
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15677
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/southbridge/intel/ibexpeak/Kconfig

@@ -20,6 +20,7 @@ if SOUTHBRIDGE_INTEL_IBEXPEAK
 
 config SOUTH_BRIDGE_OPTIONS # dummy
 	def_bool y
+	select ACPI_INTEL_HARDWARE_SLEEP_VALUES
 	select IOAPIC
 	select HAVE_HARD_RESET
 	select HAVE_USBDEBUG