sparc: switch to generic compat rt_sigpending()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index c2798cf..39f8b74 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -44,6 +44,7 @@
 	select ODD_RT_SIGACTION
 	select GENERIC_SIGALTSTACK
 	select GENERIC_COMPAT_RT_SIGPROCMASK
+	select GENERIC_COMPAT_RT_SIGPENDING
 
 config SPARC32
 	def_bool !64BIT