tile: include kernel/Kconfig.freezer in tile Kconfig

Suggested by Tejun Heo <tj@kernel.org> to fix "allyesconfig"
compile failure.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 875d008..1bb7ad4 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -140,6 +140,8 @@
 
 source "init/Kconfig"
 
+source "kernel/Kconfig.freezer"
+
 menu "Tilera-specific configuration"
 
 config NR_CPUS