cpu/x86: Declare SMM_ASEG

This is really an inverse of SMM_TSEG to flag
platforms that should potentially move away
from ASEG implementation.

Change-Id: I3b9007c55c75a59a9e6acc0a0e701300f7d21f87
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34134
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/cpu/amd/agesa/Kconfig

@@ -30,6 +30,7 @@ config CPU_AMD_AGESA
 	select LAPIC_MONOTONIC_TIMER
 	select SPI_FLASH if HAVE_ACPI_RESUME
 	select POSTCAR_STAGE
+	select SMM_ASEG
 
 if CPU_AMD_AGESA
 

src/cpu/amd/pi/Kconfig

@@ -29,6 +29,7 @@ config CPU_AMD_PI
 	select LAPIC_MONOTONIC_TIMER
 	select SPI_FLASH if HAVE_ACPI_RESUME
 	select POSTCAR_STAGE if !BINARYPI_LEGACY_WRAPPER
+	select SMM_ASEG
 
 if CPU_AMD_PI