arm: socfpga: Rearrange sequence of macros in handoff_soc64.h

Rearrange sequence of macros in handoff_soc64.h without any functionality
change. In preparation for Stratix10 and Agilex handoff function
restructuring.

Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>