cpu/x86: Flip SMM_TSEG default

This is only a qualifier between TSEG and ASEG.

Change-Id: I8051df92d9014e3574f6e7d5b6f1d6677fe77c82
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34135
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/intel/denverton_ns/Kconfig

@@ -37,7 +37,6 @@ config CPU_SPECIFIC_OPTIONS
 	select C_ENVIRONMENT_BOOTBLOCK
 	select IOAPIC
 	select HAVE_SMI_HANDLER
-	select SMM_TSEG
 	select CACHE_MRC_SETTINGS
 	select PARALLEL_MP
 	select PCR_COMMON_IOSF_1_0