Add Makefile support for TEST_GEN_PROGS_EXTENDED targets. These tests
are not run by default.

TEST_GEN_PROGS_EXTENDED will be used for Live Update selftests in
subsequent commits. These selftests must be run manually because they
require the user/runner to perform additional actions, such as kexec,
during the test.

Signed-off-by: David Matlack <dmatlack@google.com>
---
 tools/testing/selftests/vfio/Makefile | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/vfio/Makefile b/tools/testing/selftests/vfio/Makefile
index 8e6e2cc2d8fd..424649049d94 100644
--- a/tools/testing/selftests/vfio/Makefile
+++ b/tools/testing/selftests/vfio/Makefile
@@ -22,12 +22,15 @@ LDFLAGS += -pthread
 LIBS_O := $(LIBVFIO_O)
 LIBS_O += $(LIBLIVEUPDATE_O)
 
-$(TEST_GEN_PROGS): %: %.o $(LIBS_O)
+$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): %: %.o $(LIBS_O)
 	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $< $(LIBS_O) $(LDLIBS) -o $@
 
-TEST_GEN_PROGS_O = $(patsubst %, %.o, $(TEST_GEN_PROGS))
-TEST_DEP_FILES := $(patsubst %.o, %.d, $(TEST_GEN_PROGS_O))
+TESTS_O := $(patsubst %, %.o, $(TEST_GEN_PROGS))
+TESTS_O += $(patsubst %, %.o, $(TEST_GEN_PROGS_EXTENDED))
+
+TEST_DEP_FILES := $(patsubst %.o, %.d, $(TESTS_O))
 TEST_DEP_FILES += $(patsubst %.o, %.d, $(LIBS_O))
 -include $(TEST_DEP_FILES)
 
-EXTRA_CLEAN += $(TEST_GEN_PROGS_O) $(TEST_DEP_FILES)
+EXTRA_CLEAN += $(TESTS_O)
+EXTRA_CLEAN += $(TEST_DEP_FILES)
-- 
2.52.0.487.g5c8c507ade-goog