arm64: zynqmp: Move rtc to different location on zcu104-revA

Move it the same location as is on zcu104-revC for easier comparison.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/fe6c3f96fbd359409b7fef85d2c2ada584b3d0cc.1623684253.git.michal.simek@xilinx.com