Makefile: Drop HAVE_SMI_HANDLER test for smm-class

Change-Id: Id0bb5266246dbd959c6497d7c411f908cc49318c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41984
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/google/dedede/Makefile.inc

@@ -10,7 +10,7 @@ ramstage-y += mainboard.c
 ramstage-y += ec.c
 ramstage-y += board_info.c
 
-smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
+smm-y += smihandler.c
 
 subdirs-y += variants/baseboard
 subdirs-y += spd

src/mainboard/intel/jasperlake_rvp/Makefile.inc

@@ -15,7 +15,7 @@ ramstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-y += mainboard.c
 ramstage-y += board_id.c
 
-smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
+smm-y += smihandler.c
 
 subdirs-y += ../common
 subdirs-y += variants/baseboard