Rename the socfpga_cyclone5.h to socfpga_cyclone5_socdk.h, and
socfpga_arria.h to socfpga_arria5_socdk.h. This matches the other SoCFPGA
board config files.
Suggested-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NDinh Nguyen <dinguyen@opensource.altera.com>