On the i.MX6SX, it is common to use the LDB and LCDIF with the same
parent clock, such as the IMX6SX_CLK_PLL5_VIDEO_DIV, for example.

Due to the CLK_SET_RATE_PARENT flag, the LDB clock would try to set the
clock parent rate, which can mess with the required clock rate calculated
from the eLCDIF driver.

To prevent this problem, remove the CLK_SET_RATE_PARENT flag from the
LDB clocks, so that a correct clock relationship can be achieved.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20230416150004.16834-1-festevam@gmail.comSigned-off-by: Abel Vesa <abel.vesa@linaro.org>