arch: arm: zynqmp: mp.c: tcminit halt both cores in split mode

The "zynqmp tcminit split" command should halt both cores and not just RPU1
when configuring the TCM memory for split mode.

Signed-off-by: Neal Frager <neal.frager@amd.com>
Link: https://lore.kernel.org/r/20230323082506.31576-1-neal.frager@amd.com


Signed-off-by: Michal Simek <michal.simek@amd.com>