arch/x86: Replace some uses of SMM_TSEG

No reason why the files could not be used with ASEG.
Attempts to use malloc() from ASEG would still fail,
though, due the lack of heap.

Change-Id: Idf470ae84eb34c442e833925510b08d5314e7638
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34126
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/console/Makefile.inc

@@ -8,8 +8,8 @@ ramstage-$(CONFIG_RAMSTAGE_LIBHWBASE) += hw-debug_sink.adb
 endif
 
 smm-$(CONFIG_DEBUG_SMI) += init.c console.c vtxprintf.c printk.c
-smm-$(CONFIG_SMM_TSEG) += die.c
-smm-$(CONFIG_SMM_TSEG) += post.c
+smm-y += die.c
+smm-y += post.c
 
 verstage-y += init.c
 verstage-y += printk.c