[RFC] vhost: select TAP if VHOST is configured

If VHOST_NET is configured but TUN and TAP are not, then the
kernel will build but vhost will not work correctly since it can't
setup the necessary tap device.

A solution is to select it.

Fixes: 9a393b5d5988 ("tap: tap as an independent module")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/vhost/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index b580885243f7..a24c69598241 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig

@@ -1,7 +1,8 @@
 config VHOST_NET
 	tristate "Host kernel accelerator for virtio net"
-	depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP)
+	depends on NET && EVENTFD
 	select VHOST
+	select TAP
 	---help---
 	  This kernel module can be loaded in host kernel to accelerate
 	  guest networking with virtio_net. Not to be confused with virtio_net

-- 
2.17.1