From: Zqiang
When a device or driver misbehaves, it is possible to receive events
much faster than we can print them out. Ratelimit the printing of events
During the SVA tests when the device driver didn't properly stop DMA
before unbinding, the event queue thread would almost lock-up the
reference commit 1834e1dfacca15d13f14875dd3095d3b2c719d28 from
https://source.codeaurora.org/external/imx/linux-imx
It's not at all clear what cloning options this driver supports.
So let's just clear possible_clones instead of setting it to some
bogus value. Otherwise, the following calltrace
