The qspi flash in ls1046a QDS board can operate at 50MHz frequency.
Therefore, update the maximum supported freq in dts file.
Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>