mips: switch to generic compat rt_sigaction()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b1e885f..7352acf 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -42,6 +42,7 @@
 	select MODULES_USE_ELF_REL if MODULES
 	select MODULES_USE_ELF_RELA if MODULES && 64BIT
 	select GENERIC_SIGALTSTACK
+	select GENERIC_COMPAT_RT_SIGACTION
 	select GENERIC_COMPAT_RT_SIGQUEUEINFO
 	select GENERIC_COMPAT_RT_SIGPROCMASK
 	select GENERIC_COMPAT_RT_SIGPENDING