Allow UNIX socket option for VNC websocket

- Remove unix socket option limitation for VNC websocket
- Reflect websocket option changes in documentation

Signed-off-by: Sergii Zasenko <sergii@zasenko.name>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230724100353.16628-1-sergii@zasenko.name>
diff --git a/qemu-options.hx b/qemu-options.hx
index f5c01ee..4d19660 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2516,6 +2516,10 @@
         host. It is possible to control the websocket listen address
         independently, using the syntax ``websocket``\ =host:port.
 
+        Websocket could be allowed over UNIX domain socket, using the syntax
+        ``websocket``\ =unix:path, where path is the location of a unix socket
+        to listen for connections on.
+
         If no TLS credentials are provided, the websocket connection
         runs in unencrypted mode. If TLS credentials are provided, the
         websocket connection requires encrypted client connections.
diff --git a/ui/vnc.c b/ui/vnc.c
index b3fd780..dd530f0 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3734,11 +3734,6 @@
         addr->type = SOCKET_ADDRESS_TYPE_UNIX;
         addr->u.q_unix.path = g_strdup(addrstr + 5);
 
-        if (websocket) {
-            error_setg(errp, "UNIX sockets not supported with websock");
-            goto cleanup;
-        }
-
         if (to) {
             error_setg(errp, "Port range not support with UNIX socket");
             goto cleanup;