openvswitch: Fix build failure.

Add dependency on INET to fix following build error. I have also
fixed MPLS dependency.

ERROR: "ip_route_output_flow" [net/openvswitch/openvswitch.ko]
undefined!
make[1]: *** [__modpost] Error 1
Reported-by: NJim Davis <jim.epost@gmail.com>
Signed-off-by: NPravin B Shelar <pshelar@nicira.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/openvswitch/Kconfig

@@ -4,7 +4,9 @@
 
 config OPENVSWITCH
 	tristate "Open vSwitch"
+	depends on INET
 	select LIBCRC32C
+	select NET_MPLS_GSO
 	---help---
 	  Open vSwitch is a multilayer Ethernet switch targeted at virtualized
 	  environments.  In addition to supporting a variety of features
@@ -30,8 +32,6 @@ config OPENVSWITCH
 
 config OPENVSWITCH_GRE
 	tristate "Open vSwitch GRE tunneling support"
-	select NET_MPLS_GSO
-	depends on INET
 	depends on OPENVSWITCH
 	depends on NET_IPGRE_DEMUX
 	default OPENVSWITCH
@@ -45,7 +45,6 @@ config OPENVSWITCH_GRE
 
 config OPENVSWITCH_VXLAN
 	tristate "Open vSwitch VXLAN tunneling support"
-	depends on INET
 	depends on OPENVSWITCH
 	depends on VXLAN
 	default OPENVSWITCH
@@ -58,7 +57,6 @@ config OPENVSWITCH_VXLAN
 
 config OPENVSWITCH_GENEVE
 	tristate "Open vSwitch Geneve tunneling support"
-	depends on INET
 	depends on OPENVSWITCH
 	depends on GENEVE
 	default OPENVSWITCH