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/applications/audio/seq24/default.nix

@@ -0,0 +1,24 @@
+{ lib, stdenv, fetchurl, alsa-lib, gtkmm2, libjack2, pkg-config }:
+
+stdenv.mkDerivation  rec {
+  pname = "seq24";
+  version = "0.9.3";
+
+  src = fetchurl {
+    url = "https://launchpad.net/seq24/trunk/${version}/+download/${pname}-${version}.tar.gz";
+    sha256 = "1qpyb7355s21sgy6gibkybxpzx4ikha57a8w644lca6qy9mhcwi3";
+  };
+
+  patches = [ ./mutex_no_nameclash.patch ];
+
+  buildInputs = [ alsa-lib gtkmm2 libjack2 ];
+  nativeBuildInputs = [ pkg-config ];
+
+  meta = with lib; {
+    description = "Minimal loop based midi sequencer";
+    homepage = "http://www.filter24.org/seq24";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ goibhniu ];
+  };
+}

pkgs/applications/audio/seq24/mutex_no_nameclash.patch

@@ -0,0 +1,58 @@
+--- a/src/mutex.cpp
++++ b/src/mutex.cpp
+@@ -20,23 +20,23 @@
+ 
+ #include "mutex.h"
+ 
+-const pthread_mutex_t mutex::recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
++const pthread_mutex_t mutex_no_nameclash::recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+ const pthread_cond_t condition_var::cond  = PTHREAD_COND_INITIALIZER;
+ 
+-mutex::mutex( )
++mutex_no_nameclash::mutex_no_nameclash( )
+ {
+     m_mutex_lock = recmutex;
+ }
+ 
+ void
+-mutex::lock( )
++mutex_no_nameclash::lock( )
+ {
+     pthread_mutex_lock( &m_mutex_lock );
+ }
+ 
+ 
+ void
+-mutex::unlock( )
++mutex_no_nameclash::unlock( )
+ {
+     pthread_mutex_unlock( &m_mutex_lock );
+ }
+--- a/src/mutex.h
++++ b/src/mutex.h
+@@ -24,7 +24,7 @@
+ 
+ #include <pthread.h>
+ 
+-class mutex {
++class mutex_no_nameclash {
+ 
+ private:
+ 
+@@ -37,14 +37,14 @@
+ 
+ public:
+ 
+-    mutex();
++    mutex_no_nameclash();
+ 
+     void lock();
+     void unlock();
+ 
+ };
+ 
+-class condition_var : public mutex {
++class condition_var : public mutex_no_nameclash {
+ 
+ private:
+