arm: mach-k3: am62p: Fixup CPU core, CAN-FD and Video-codec nodes in fdt

arm: mach-k3: am62p: Fixup CPU core, CAN-FD and Video-codec nodes in fdt

AM62P SOC is available in multiple variants:
-CPU cores (Cortex-A) AM62Px1 (1 core),
 AM62Px2 (2 cores), AM62Px4 (4 cores)
-With and without CAN-FD & Video-codec support

Remove the relevant FDT nodes by reading the actual configuration
from the SoC registers, with that change it is possible to have a single
dts/dtb file handling the different variant at runtime.

Signed-off-by: Aparna Patra <a-patra@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>