test: unit test for longjmp

Provide a unit test for the longjmp() library function

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Sean Anderson <seanga2@gmail.com>
diff --git a/test/lib/Makefile b/test/lib/Makefile
index 97c11e3..a30f615 100644
--- a/test/lib/Makefile
+++ b/test/lib/Makefile
@@ -7,6 +7,7 @@
 obj-$(CONFIG_EFI_SECURE_BOOT) += efi_image_region.o
 obj-y += hexdump.o
 obj-y += lmb.o
+obj-y += longjmp.o
 obj-$(CONFIG_CONSOLE_RECORD) += test_print.o
 obj-$(CONFIG_SSCANF) += sscanf.o
 obj-y += string.o