Try fix mips constants

Author: Sylwester Rąpała

src/unix/notbsd/linux/musl/b32/mips.rs

@@ -478,8 +478,8 @@ pub const TIOCMSET: ::c_int = 0x741A;
 pub const FIONREAD: ::c_int = 0x467F;
 pub const TIOCCONS: ::c_int = 0x80047478;
 
-pub const TIOCGRS485: ::c_int = 0x542E;
-pub const TIOCSRS485: ::c_int = 0x542F;
+pub const TIOCGRS485: ::c_int = 0x4020542E;
+pub const TIOCSRS485: ::c_int = 0xC020542F;
 
 pub const POLLWRNORM: ::c_short = 0x4;
 pub const POLLWRBAND: ::c_short = 0x100;