efi_loader: expose END device path node

This commit exposes the END device path node.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index 2493d74..ebffb77 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -30,7 +30,7 @@
 #endif
 
 /* template END node: */
-static const struct efi_device_path END = {
+const struct efi_device_path END = {
 	.type     = DEVICE_PATH_TYPE_END,
 	.sub_type = DEVICE_PATH_SUB_TYPE_END,
 	.length   = sizeof(END),