intel/cpu: Switch older models to TSC_MONOTONIC_TIMER

The implementation of udelay() with LAPIC timers
existed first, as we did not have calculations
implemented for TSC frequency.

Change-Id: If510bcaadee67e3a5792b3fc7389353b672712f9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34200
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/getac/p470/Kconfig

@@ -30,7 +30,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_MP_TABLE
 	select HAVE_OPTION_TABLE
 	select HAVE_ACPI_RESUME
-	select UDELAY_LAPIC
 	select BOARD_ROMSIZE_KB_1024
 	select INTEL_INT15
 	select I945_LVDS