Staging: p9auth: add to the kernel build

This adds the p9auth code to the kernel build

Cc: Ashwin Ganti <ashwin.ganti@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index a9b85e8..7e97266 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -35,3 +35,4 @@
 obj-$(CONFIG_USB_SERIAL_ATEN2011)	+= uc2322/
 obj-$(CONFIG_B3DFG)		+= b3dfg/
 obj-$(CONFIG_IDE_PHISON)	+= phison/
+obj-$(CONFIG_PLAN9AUTH)		+= p9auth/