efi_selftest: provide unit test for the EFI_TCG2_PROTOCOL

Provide a minimal test for the EFI_TCG2_PROTOCOL.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index aabb743..58fb43f 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -55,6 +55,7 @@
 obj-$(CONFIG_EFI_RNG_PROTOCOL) += efi_selftest_rng.o
 obj-$(CONFIG_EFI_GET_TIME) += efi_selftest_rtc.o
 obj-$(CONFIG_EFI_LOAD_FILE2_INITRD) += efi_selftest_load_initrd.o
+obj-$(CONFIG_EFI_TCG2_PROTOCOL) += efi_selftest_tcg2.o
 
 ifeq ($(CONFIG_GENERATE_ACPI_TABLE),)
 obj-y += efi_selftest_fdt.o