i2c: designware: suppress unneeded SDA hold time warnings
The hardware may not support SDA hold time configuration, but if it is not set in the Device Tree either, there is no need to print a warning. Reported-by: NThomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: NAlexander Monakov <amonakov@ispras.ru> Acked-by: NJarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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