Add MAP_STACK and MAP_HUGETLB entries to MIPS so that the nix crate can be built

src/unix/notbsd/linux/mips.rs

@@ -303,6 +303,7 @@ pub const MAP_EXECUTABLE: ::c_int = 0x4000;
 pub const MAP_LOCKED: ::c_int = 0x8000;
 pub const MAP_POPULATE: ::c_int = 0x10000;
 pub const MAP_NONBLOCK: ::c_int = 0x20000;
+pub const MAP_STACK: ::c_int = 0x40000;
 
 pub const SOCK_STREAM: ::c_int = 2;
 pub const SOCK_DGRAM: ::c_int = 1;
@@ -426,6 +427,8 @@ pub const PTRACE_SETFPXREGS: ::c_uint = 19;
 pub const PTRACE_GETREGS: ::c_uint = 12;
 pub const PTRACE_SETREGS: ::c_uint = 13;
 
+pub const MAP_HUGETLB: ::c_int = 0x080000;
+
 pub const EFD_NONBLOCK: ::c_int = 0x80;
 
 pub const F_GETLK: ::c_int = 14;