clk_get_rate returns the current clock rate in Hz for a clock source so
if we divide it by 1M, then we get frequency in MHz and not kHz.
Signed-off-by: Qin Wei <support@vocore.io>
[added missing commit message, and fixed author with SoB from PR message]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Petr Štetiar <ynezz@true.cz>