Input: cyapa - use time based retry loop

Using counter based retry loops for peripherals results in the delay
being significantly overrun during high-load situations where delay
functions tend to be vary imprecise and overrun there timeouts. So
condition the termination on the actual condition of 2s for the
re-calibration to have been successful.

As this is a very long delay there is no advantage in using
high-resolution timers thus switching this to msleep().

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

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