clk: imx: imxrt1050: add IMXRT1050_CLK_LCDIF_PIX clock gate

Add IMXRT1050_CLK_LCDIF_PIX clock gate.

Cc: Jesse Taube <mr.bossman075@gmail.com>
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Acked-by: Jesse Taube <mr.bossman075@gmail.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20221117181014.851505-2-giulio.benetti@benettiengineering.com