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/games/eidolon/cargo-lock.patch

@@ -0,0 +1,19 @@
+diff --git a/Cargo.lock b/Cargo.lock
+index 8abf781..62511ef 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -1,3 +1,5 @@
++# This file is automatically @generated by Cargo.
++# It is not intended for manual editing.
+ [[package]]
+ name = "adler32"
+ version = "1.0.3"
+@@ -229,7 +231,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
+ 
+ [[package]]
+ name = "eidolon"
+-version = "1.4.5"
++version = "1.4.6"
+ dependencies = [
+  "butlerd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+  "dirs 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",