[PATCH] Do not oops with usb plugged on boot

[Andy Green]

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Somebody in the thread at some point said:
| Hey,
|
| the attached patch is fixing an oops on boot. pcf50633_global is not
yet set
| when we boot with usb attached and then finding the "struct device"
within
| the NULL pointer. I think it is safe to not call into the pcf50633 as
we will
| do a "coldplug" anyway.

Thanks, never saw that in the wild but your fix is needed alright.  Sent
this and the spinlock one into stable and andy.

- -Andy
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