tests: Add acpi/acpigen-test test case

Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: Icc128212c1f72beb50caca671b4bada3507d3a1f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50520
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/tests/Makefile.inc b/tests/Makefile.inc
index a10e9bf..1e260fa 100644
--- a/tests/Makefile.inc
+++ b/tests/Makefile.inc
@@ -59,8 +59,8 @@
 stages+= ramstage rmodule postcar libagesa
 
 alltests:=
-subdirs:= tests/arch tests/commonlib tests/console tests/cpu tests/device
-subdirs+= tests/drivers tests/ec tests/lib tests/mainboard
+subdirs:= tests/arch tests/acpi tests/commonlib tests/console tests/cpu
+subdirs+= tests/device tests/drivers tests/ec tests/lib tests/mainboard
 subdirs+= tests/northbridge tests/security tests/soc tests/southbridge
 subdirs+= tests/superio tests/vendorcode