boards: nxp: frdm_rw612: correct max frequency for WS25Q512JV

WS25Q512JV can only run at 104MHz at 3.3V, unless the read parameter
bits are changed. Since we don't reprogram these currently, reduce max
frequency to safe value

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
(cherry picked from commit 23d25372)