add debug message when i2c peripheral clk rate is 0, then
directly return -EINVAL.

Signed-off-by: Gao Pan <pandy.gao@nxp.com>
Reviewed-by: Andy Duan <fugang.duan@nxp.com>
(Vipul: Fixed merge conflicts)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>