input-utils: Fix cross-compilation

We actually don't need to `strip` using `install`. Stripping is already
part of the fixup. This ends up being a fix we can apply universally,
but works around an issue where `install` doesn't know about the
prefixed `strip` binary.

pkgs/os-specific/linux/input-utils/default.nix

@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [
     "prefix=$(out)"
-    "STRIP=-s"
+    "STRIP="
   ];
 
   meta = with stdenv.lib; {