arm64: dts: fix max frequency of macronix devices on s32gxxxaevb

commit 9133b22fcbe14598c74fbd233482450e01834483 from
https://github.com/nxp-auto-linux/linux



The MX25UW51245G flash memory on s32r45-evb and s32gxxxaevb boards fit
in the 'Q' automotive grade (MX25UW51245GXDQ00), as opposed to the other
platforms which have an 'R' automotive grade memory (MX25UW51245GXDR00).
Among others, a difference for these types is the maximmum supported
frequency:
MX25UW51245GXDQ00 - 166 MHz
MX25UW51245GXDR00 - 200 MHz

Up until now, the s32gxxxaevb platforms were wrongly configured with
the 200 MHz frequency.

For the MX25UW51245GXDQ00 memory, the maximum supported frequency is 166
MHz. However, getting this frequency would require further modifications
in the clock tree configuration. For now, set the frequency to 133 MHz
as a conservative approach, since this frequency can be obtained with
the current clock configurations.

Issue: ALB-9840
Signed-off-by: Bogdan Roman <bogdan-gabriel.roman@nxp.com>
Signed-off-by: Zhantao Tang <zhantao.tang@windriver.com>