intel/haswell: Drop MONOTONIC_TIMER_MSR

The variable was set on all haswell boards, so we can do it like on
broadwell where the MSR based timer is assumed to be around, too.

Change-Id: Id48ad7454d4cf83c3b1616b64687cdcfee4baa10
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10256
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)

src/mainboard/intel/baskingridge/Kconfig

@@ -11,7 +11,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select HAVE_ACPI_RESUME
 	select HAVE_SMI_HANDLER
 	select MAINBOARD_HAS_CHROMEOS
-	select MONOTONIC_TIMER_MSR
 	select INTEL_INT15
 	select CHROMEOS_VBNV_CMOS