treewide: editorconfig fixes

- remove trailing whitespace
- use spaces for indentation

pkgs/os-specific/linux/rewritefs/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, fuse, pcre }: 
+{ lib, stdenv, fetchFromGitHub, pkg-config, fuse, pcre }:
 
 stdenv.mkDerivation {
   pname = "rewritefs";
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
     rev    = "33fb844d8e8ff441a3fc80d2715e8c64f8563d81";
     sha256 = "15bcxprkxf0xqxljsqhb0jpi7p1vwqcb00sjs7nzrj7vh2p7mqla";
   };
- 
+
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ fuse pcre ];