efi_selftest: unit test for RegisterProtocolNotify()

Provide a unit test for the RegisterProtocolNotify() boot service.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 4945691..c69ad7a 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -27,6 +27,7 @@
 efi_selftest_loaded_image.o \
 efi_selftest_manageprotocols.o \
 efi_selftest_memory.o \
+efi_selftest_register_notify.o \
 efi_selftest_rtc.o \
 efi_selftest_snp.o \
 efi_selftest_textinput.o \