Auto merge of #3100 - cppcoffee:master, r=JohnTitor

uclibc/mips: add missing MAP_HUGETLB constant

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>

This add the MAP_HUGETLB constant on Linux and uclibc.
It is defined as part of the uclibc in mman.h:

https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/libc/sysdeps/linux/mips/bits/mman.h#n35

Author: bors

src/unix/linux_like/linux/uclibc/mips/mod.rs

@@ -263,6 +263,8 @@ pub const ICANON: ::tcflag_t = 0x00000002;
 pub const PENDIN: ::tcflag_t = 0x00004000;
 pub const NOFLSH: ::tcflag_t = 0x00000080;
 
+pub const MAP_HUGETLB: ::c_int = 0x80000;
+
 pub const B0: ::speed_t = 0o000000;
 pub const B50: ::speed_t = 0o000001;
 pub const B75: ::speed_t = 0o000002;