Decrease polling time 'MLXCPLD_I2C_POLL_TIME' from 400 usec to 200 usec. It improves performance of I2C transactions. Reliability of setting polling time to 200 usec has been validated across all the supported systems. Signed-off-by: Vadim Pasternak <vadimp@nvidia.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>