nvc0: set rsvd_kick correctly

This prevents trampling beyond the end of the command stream during flushes.

NOTE: This is a candidate for the stable branches.

Reported-by: Christoph Bumiller <christoph.bumiller@speed.at>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

src/gallium/drivers/nvc0/nvc0_screen.c

@@ -568,6 +568,7 @@ nvc0_screen_create(struct nouveau_device *dev)
    chan = screen->base.channel;
    push = screen->base.pushbuf;
    push->user_priv = screen;
+   push->rsvd_kick = 5;
 
    screen->base.vidmem_bindings |= PIPE_BIND_CONSTANT_BUFFER |
       PIPE_BIND_VERTEX_BUFFER | PIPE_BIND_INDEX_BUFFER;