char: rename CharDriverState Chardev

Pick a uniform chardev type name.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/net/filter-mirror.c b/net/filter-mirror.c
index b7d6456..aa0aa98 100644
--- a/net/filter-mirror.c
+++ b/net/filter-mirror.c
@@ -191,7 +191,7 @@
 static void filter_mirror_setup(NetFilterState *nf, Error **errp)
 {
     MirrorState *s = FILTER_MIRROR(nf);
-    CharDriverState *chr;
+    Chardev *chr;
 
     if (!s->outdev) {
         error_setg(errp, "filter mirror needs 'outdev' "
@@ -220,7 +220,7 @@
 static void filter_redirector_setup(NetFilterState *nf, Error **errp)
 {
     MirrorState *s = FILTER_REDIRECTOR(nf);
-    CharDriverState *chr;
+    Chardev *chr;
 
     if (!s->indev && !s->outdev) {
         error_setg(errp, "filter redirector needs 'indev' or "