musl: Define O_LARGEFILE for riscv32

Author: kraj

src/unix/linux_like/linux/musl/b32/riscv32/mod.rs

@@ -371,6 +371,7 @@ pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
 pub const __SIZEOF_PTHREAD_BARRIERATTR_T: usize = 4;
 pub const O_DIRECT: ::c_int = 16384;
 pub const O_DIRECTORY: ::c_int = 65536;
+pub const O_LARGEFILE: ::c_int = 0o0100000;
 pub const O_NOFOLLOW: ::c_int = 131072;
 pub const MAP_HUGETLB: ::c_int = 262144;
 pub const MAP_LOCKED: ::c_int = 8192;