Merge pull request #1805 from JohnTitor/open-c-syscalls

Add some syscalls from `fs/open.c` on linux/aarch64

src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs

@@ -756,6 +756,10 @@ pub const SYS_umount2: ::c_long = 39;
 pub const SYS_mount: ::c_long = 40;
 pub const SYS_pivot_root: ::c_long = 41;
 pub const SYS_nfsservctl: ::c_long = 42;
+pub const SYS_statfs: ::c_long = 43;
+pub const SYS_fstatfs: ::c_long = 44;
+pub const SYS_truncate: ::c_long = 45;
+pub const SYS_ftruncate: ::c_long = 46;
 pub const SYS_fallocate: ::c_long = 47;
 pub const SYS_faccessat: ::c_long = 48;
 pub const SYS_chdir: ::c_long = 49;