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/security/gnupg/gpgkey2ssh-20.patch

@@ -0,0 +1,14 @@
+diff --git a/tools/gpgkey2ssh.c b/tools/gpgkey2ssh.c
+index 903fb5b..d5611dc 100644
+--- a/tools/gpgkey2ssh.c
++++ b/tools/gpgkey2ssh.c
+@@ -268,7 +268,7 @@ main (int argc, char **argv)
+   keyid = argv[1];
+ 
+   ret = asprintf (&command,
+-		  "gpg --list-keys --with-colons --with-key-data '%s'",
++		  "@out@/bin/gpg --list-keys --with-colons --with-key-data '%s'",
+ 		  keyid);
+   assert (ret > 0);
+ 
+