Staging: pohmelfs: kconfig/makefile and vfs changes.

This patch adds Kconfig and Makefile entries and exports to
VFS functions to be used by POHMELFS.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 1971299..16a8d70 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -30,3 +30,4 @@
 obj-$(CONFIG_EPL)		+= epl/
 obj-$(CONFIG_ANDROID)		+= android/
 obj-$(CONFIG_DST)		+= dst/
+obj-$(CONFIG_POHMELFS)		+= pohmelfs/