soc/intel/dnv_ns: enable uCode PM Timer emulation

Denverton-NS supports uCode PM Timer emulation, according to Intel
doc#558579 rev2.2. Thus, enable it.

Change-Id: I21f55816da9f5e240fdf01a0e92b67b09ef38599
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/soc/intel/denverton_ns/Kconfig b/src/soc/intel/denverton_ns/Kconfig
index c657285..a578a71 100644
--- a/src/soc/intel/denverton_ns/Kconfig
+++ b/src/soc/intel/denverton_ns/Kconfig
@@ -15,6 +15,7 @@
 	def_bool y
 	select ARCH_X86
 	select BOOT_DEVICE_SUPPORTS_WRITES
+	select CPU_SUPPORTS_PM_TIMER_EMULATION
 	select DEBUG_GPIO
 	select SOC_INTEL_COMMON
 	select SOC_INTEL_COMMON_RESET