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/openconnect/fix-paths.patch

@@ -0,0 +1,20 @@
+--- a/src/nm-openconnect-service.c
++++ b/src/nm-openconnect-service.c
+@@ -60,7 +60,7 @@
+ 
+ static const char *openconnect_binary_paths[] =
+ {
+-	"/usr/bin/openconnect",
++	"@openconnect@/bin/openconnect",
+ 	"/usr/sbin/openconnect",
+ 	"/usr/local/bin/openconnect",
+ 	"/usr/local/sbin/openconnect",
+@@ -734,7 +734,7 @@
+ 
+ 	_LOGD ("nm-openconnect-service (version " DIST_VERSION ") starting...");
+ 
+-	if (system ("/sbin/modprobe tun") == -1)
++	if (system ("@kmod@/bin/modprobe tun") == -1)
+ 		exit (EXIT_FAILURE);
+ 
+ 	if (bus_name)