armv8/fsl-lsch3: consolidate the clock system initialization

This patch binds the sys_info->freq_systembus to Platform PLL, and
implements the IPs' clock function individually.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
3 files changed