YAMAMOTO Takashi 723cc14009 risc-v: Switch int64_t from long long to long
So that it matches what the toolchain expects.

    spacetanuki% riscv64-unknown-elf-gcc --version
    riscv64-unknown-elf-gcc (SiFive GCC 8.3.0-2019.08.0) 8.3.0
    Copyright (C) 2018 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO
    warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

    spacetanuki% riscv64-unknown-elf-gcc -dM -E - < /dev/null | grep UINT64_TYPE
    #define __UINT64_TYPE__ long unsigned int
    spacetanuki%
2020-11-19 00:49:56 -08:00
..