[PATCH RESEND] arm: marvell: Fix maxium->maxim typo for brownstone dts

[Andrew Lunn]

> I assume this PMIC would behave identically and thus this should go to stable. 
> Would this be done by sending a v2 with the Cc: tag added?

Thanks for testing this.  Please also add a Fixes: tag, probably for
when the node was added to DT.

     Andrew