slip: Move the SLIP drivers

Move the Serial Line Internet Protocol (SLIP) drivers into
drivers/net/slip/ and make the necessary Kconfig and Makefile
changes.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Alan Cox <alan@linux.intel.com>
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 52dae95..e6a183e 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -20,8 +20,6 @@
 
 obj-$(CONFIG_NET) += Space.o loopback.o
 obj-$(CONFIG_NET_SB1000) += sb1000.o
-obj-$(CONFIG_SLIP) += slip.o
-obj-$(CONFIG_SLHC) += slhc.o
 
 obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
 obj-$(CONFIG_XEN_NETDEV_BACKEND) += xen-netback/
@@ -48,6 +46,8 @@
 obj-$(CONFIG_PPPOE) += ppp/
 obj-$(CONFIG_PPPOL2TP) += ppp/
 obj-$(CONFIG_PPTP) += ppp/
+onj-$(CONFIG_SLIP) += slip/
+obj-$(CONFIG_SLHC) += slip/
 obj-$(CONFIG_TR) += tokenring/
 obj-$(CONFIG_WAN) += wan/
 obj-$(CONFIG_ARCNET) += arcnet/