staging: zcache: re-enable config/build of zcache after renaming

In staging, re-enable config/build of zcache after ramster->zcache renaming.

Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index eb61455..0b47a06 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -138,4 +138,6 @@
 
 source "drivers/staging/fwserial/Kconfig"
 
+source "drivers/staging/zcache/Kconfig"
+
 endif # STAGING