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/development/compilers/adoptopenjdk-icedtea-web/patches/0001-make-cargo-work-with-nix-build-on-linux.patch

@@ -0,0 +1,46 @@
+Subject: [PATCH] make cargo work with nix-build on linux
+
+---
+ .cargo/config            | 2 ++
+ rust-launcher/Cargo.lock | 4 ++++
+ rust-launcher/Cargo.toml | 7 ++++---
+ 3 files changed, 10 insertions(+), 3 deletions(-)
+ create mode 100644 .cargo/config
+ create mode 100644 rust-launcher/Cargo.lock
+
+diff --git a/.cargo/config b/.cargo/config
+new file mode 100644
+index 0000000..03ec4a2
+--- /dev/null
++++ b/.cargo/config
+@@ -0,0 +1,2 @@
++[net]
++offline=true
+diff --git a/rust-launcher/Cargo.lock b/rust-launcher/Cargo.lock
+new file mode 100644
+index 0000000..6055cc0
+--- /dev/null
++++ b/rust-launcher/Cargo.lock
+@@ -0,0 +1,4 @@
++[[package]]
++name = "launcher"
++version = "1.8.0"
++
+diff --git a/rust-launcher/Cargo.toml b/rust-launcher/Cargo.toml
+index 61ee308..5e6e91b 100644
+--- a/rust-launcher/Cargo.toml
++++ b/rust-launcher/Cargo.toml
+@@ -3,6 +3,7 @@ name = "launcher"
+ version = "1.8.0"
+ authors = ["https://icedtea.classpath.org/wiki/IcedTea-Web"]
+ 
+-[dependencies]
+-[target.'cfg(windows)'.dependencies]
+-dunce = "0.1.1"
++[workspace]
++# We need this too or cargo will fail.  Some files seem to be copied around and
++# cargo thinks we are in a workspace, so let's exclude everything.
++exclude = ["*"]
+-- 
+2.19.2
+