external/openldap's include/lber_types.h is generated during build

...from include/lber_types.hin.  So fix dependencies after
cad68c65 "relax deps of link target on external
projects."

Change-Id: I1c002b063c53f82ff18d11577a99f7413f7fb7a5

RepositoryExternal.mk

@@ -2800,7 +2800,7 @@ $(call gb_LinkTarget_set_include,$(1),\
 	-I$(call gb_UnpackedTarball_get_dir,openldap/include) \
 	$$(INCLUDE) \
 )
-$(call gb_LinkTarget_use_external_project,$(1),openldap)
+$(call gb_LinkTarget_use_external_project,$(1),openldap,full)
 $(call gb_LinkTarget_add_libs,$(1), \
 	$(call gb_UnpackedTarball_get_dir,openldap)/libraries/libldap/.libs/libldap.a \
 	$(call gb_UnpackedTarball_get_dir,openldap)/libraries/liblber/.libs/liblber.a \