clk: imx: composite-8m: Enable gate clk with mcore_booted

Bootloader might disable some CCM ROOT Slices. So if mcore_booted set with
display CCM ROOT disabled by Bootloader, kernel display BLK CTRL driver
imx8m_blk_ctrl_driver_init may hang the system because the BUS clk is
disabled.

Add back gate ops, but with disable doing nothing, then the CCM ROOT
will be enabled when used.

Fixes: bb7e897b ("clk: imx8m: check mcore_booted before register clk")
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20240607133347.3291040-2-peng.fan@oss.nxp.com


Signed-off-by: Abel Vesa <abel.vesa@linaro.org>