fix type issues in stdint.h so underlying types of 64-bit types match ABI

[musl] / arch / arm / bits / statfs.h

struct statfs {
        unsigned long f_type, f_bsize;
        fsblkcnt_t f_blocks, f_bfree, f_bavail;
        fsfilcnt_t f_files, f_ffree;
        fsid_t f_fsid;
        unsigned long f_namelen, f_frsize, f_flags, f_spare[4];
};