uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/networking/mosh/utempter_path.patch

@@ -0,0 +1,14 @@
+diff -ur mosh-1.3.2/src/frontend/mosh-server.cc mosh-1.3.2.patched/src/frontend/mosh-server.cc
+--- mosh-1.3.2/src/frontend/mosh-server.cc	2017-07-22 23:14:53.000000000 +0200
++++ mosh-1.3.2.patched/src/frontend/mosh-server.cc	2018-06-06 10:45:50.725352804 +0200
+@@ -351,6 +351,10 @@
+     }
+   }
+ 
++#ifdef HAVE_UTEMPTER
++    utempter_set_helper( "utempter" );
++#endif
++
+   try {
+     return run_server( desired_ip, desired_port, command_path, command_argv, colors, verbose, with_motd );
+   } catch ( const Network::NetworkException &e ) {