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/xgmac.c b/hw/xgmac.c
index e539681..a91ef60 100644
--- a/hw/xgmac.c
+++ b/hw/xgmac.c
@@ -308,7 +308,7 @@
     .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
-static int eth_can_rx(VLANClientState *nc)
+static int eth_can_rx(NetClientState *nc)
 {
     struct XgmacState *s = DO_UPCAST(NICState, nc, nc)->opaque;
 
@@ -316,7 +316,7 @@
     return s->regs[DMA_CONTROL] & DMA_CONTROL_SR;
 }
 
-static ssize_t eth_rx(VLANClientState *nc, const uint8_t *buf, size_t size)
+static ssize_t eth_rx(NetClientState *nc, const uint8_t *buf, size_t size)
 {
     struct XgmacState *s = DO_UPCAST(NICState, nc, nc)->opaque;
     static const unsigned char sa_bcast[6] = {0xff, 0xff, 0xff,
@@ -364,7 +364,7 @@
     return ret;
 }
 
-static void eth_cleanup(VLANClientState *nc)
+static void eth_cleanup(NetClientState *nc)
 {
     struct XgmacState *s = DO_UPCAST(NICState, nc, nc)->opaque;
     s->nic = NULL;