arm: socfpga: Changed base_addr_s10.h to base_addr_soc64.h

Rename to common file name to used by all SOC64 devices and change
"_S10_" to "_SOC64_" in base_addr_soc64.h.

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