boards: arm: RT1010_EVK: Set FlexSPI read address option bit

Set FlexSPI read address option bit (READADDROPT) in early boot for
FlexSPI on RT1010. This fixes an issue where the FlexSPI fetch would
return invalid data, resulting an a HardFault.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>