usb: chipidea: usb2: make clock optional

Allow clock to be missing from DT (assume it's enabled then).

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
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Michał Mirosław 2020-04-04 02:00:05 +02:00 • committed by Peter Chen
commit c2de37b31f
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