[SPARC64]: Re-export force_sig to modules.

Used by sparc envctl drivers, specifically envctl.c and bbc_envctrl.c
under drivers/sbus/char/
Signed-off-by: David S. Miller <davem@davemloft.net>

kernel/signal.c

@@ -1942,6 +1942,7 @@ int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka,
 EXPORT_SYMBOL(recalc_sigpending);
 EXPORT_SYMBOL_GPL(dequeue_signal);
 EXPORT_SYMBOL(flush_signals);
+EXPORT_SYMBOL(force_sig);
 EXPORT_SYMBOL(kill_pg);
 EXPORT_SYMBOL(kill_proc);
 EXPORT_SYMBOL(ptrace_notify);