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/networkmanager/openvpn/fix-paths.patch

@@ -0,0 +1,34 @@
+--- a/properties/nm-openvpn-editor.c
++++ b/properties/nm-openvpn-editor.c
+@@ -775,8 +775,7 @@
+ nm_find_openvpn (void)
+ {
+ 	static const char *openvpn_binary_paths[] = {
+-		"/usr/sbin/openvpn",
+-		"/sbin/openvpn",
++		"@openvpn@/bin/openvpn",
+ 		NULL
+ 	};
+ 	const char  **openvpn_binary = openvpn_binary_paths;
+--- a/src/nm-openvpn-service.c
++++ b/src/nm-openvpn-service.c
+@@ -522,9 +522,7 @@
+ openvpn_binary_find_exepath (void)
+ {
+ 	static const char *paths[] = {
+-		"/usr/sbin/openvpn",
+-		"/sbin/openvpn",
+-		"/usr/local/sbin/openvpn",
++		"@openvpn@/bin/openvpn",
+ 	};
+ 	int i;
+ 
+@@ -2326,7 +2324,7 @@
+ 	_LOGD ("nm-openvpn-service (version " DIST_VERSION ") starting...");
+ 
+ 	if (   !g_file_test ("/sys/class/misc/tun", G_FILE_TEST_EXISTS)
+-	    && (system ("/sbin/modprobe tun") == -1))
++	    && (system ("@kmod@/bin/modprobe tun") == -1))
+ 		return EXIT_FAILURE;
+ 
+ 	plugin = nm_openvpn_plugin_new (bus_name);