Use USEC_PER_MSEC rather than the hard coded value of 1000.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://msgid.link/r/20240125103117.2622095-5-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>