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/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index fd14d7a..846e903 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -869,7 +869,7 @@
         s->ivshmem_bar2 = host_memory_backend_get_memory(s->hostmem,
                                                          &error_abort);
     } else {
-        CharDriverState *chr = qemu_chr_fe_get_driver(&s->server_chr);
+        Chardev *chr = qemu_chr_fe_get_driver(&s->server_chr);
         assert(chr);
 
         IVSHMEM_DPRINTF("using shared memory server (socket = %s)\n",