net: Rename VLANClientState to NetClientState

The vlan feature is no longer part of net core.  Rename VLANClientState
to NetClientState because net clients are not explicitly associated with
a vlan at all, instead they have a peer net client to which they are
connected.

This patch is a mechanical search-and-replace except for a few
whitespace fixups where changing VLANClientState to NetClientState
misaligned whitespace.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
diff --git a/hw/mipsnet.c b/hw/mipsnet.c
index 3385be7..28063b1 100644
--- a/hw/mipsnet.c
+++ b/hw/mipsnet.c
@@ -62,7 +62,7 @@
     return 0;
 }
 
-static int mipsnet_can_receive(VLANClientState *nc)
+static int mipsnet_can_receive(NetClientState *nc)
 {
     MIPSnetState *s = DO_UPCAST(NICState, nc, nc)->opaque;
 
@@ -71,7 +71,7 @@
     return !mipsnet_buffer_full(s);
 }
 
-static ssize_t mipsnet_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
+static ssize_t mipsnet_receive(NetClientState *nc, const uint8_t *buf, size_t size)
 {
     MIPSnetState *s = DO_UPCAST(NICState, nc, nc)->opaque;
 
@@ -209,7 +209,7 @@
     }
 };
 
-static void mipsnet_cleanup(VLANClientState *nc)
+static void mipsnet_cleanup(NetClientState *nc)
 {
     MIPSnetState *s = DO_UPCAST(NICState, nc, nc)->opaque;