Trying to build a s390x kernel with CONFIG_FTRACE_SYSCALLS will fail
because ftrace.o is not built/linked.
Acked-by: NFrederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: NAristeu Rozanski <aris@redhat.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>