arm: socfpga: Define Use FPGA switch handoff section size for Agilex5

arm: socfpga: Define Use FPGA switch handoff section size for Agilex5

Agilex5 FPGA switch section in the handoff data is larger by 32 bytes
than the default value as these extra sections contains I3C0 and I3C1
register offsets and values with 4 bytes each.

This requires 4 more times of reading the FPGA switch section of the
handoff data to fully populate the handoff data table in the memory
during runtime.

Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>