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/os-specific/linux/read-edid/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, lib, fetchurl, cmake, libx86 }:
+
+stdenv.mkDerivation rec {
+  pname = "read-edid";
+  version = "3.0.2";
+
+  src = fetchurl {
+    url = "http://www.polypux.org/projects/read-edid/${pname}-${version}.tar.gz";
+    sha256 = "0vqqmwsgh2gchw7qmpqk6idgzcm5rqf2fab84y7gk42v1x2diin7";
+  };
+
+  patches = [ ./fno-common.patch ];
+
+  postPatch = ''
+    substituteInPlace CMakeLists.txt --replace 'COPYING' 'LICENSE'
+  '';
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = lib.optional stdenv.hostPlatform.isx86 libx86;
+
+  cmakeFlags = [ "-DCLASSICBUILD=${if stdenv.hostPlatform.isx86 then "ON" else "OFF"}" ];
+
+
+  meta = with lib; {
+    description = "Tool for reading and parsing EDID data from monitors";
+    homepage = "http://www.polypux.org/projects/read-edid/";
+    license = licenses.bsd2; # Quoted: "This is an unofficial license. Let's call it BSD-like."
+    maintainers = [ maintainers.dezgeg ];
+    platforms = platforms.linux;
+  };
+}

pkgs/os-specific/linux/read-edid/fno-common.patch

@@ -0,0 +1,22 @@
+--- a/get-edid/classic.c
++++ b/get-edid/classic.c
+@@ -26,7 +26,7 @@ typedef byte* real_ptr;
+ #define dosmemput(buffer,length,offset) memcpy(offset,buffer,length)
+ 
+ #define display(...) if (quiet == 0) { fprintf(stderr, __VA_ARGS__); }
+-int quiet;
++extern int quiet;
+ 
+ real_ptr far_ptr_to_real_ptr( uint32 farptr )
+ {
+--- a/get-edid/i2c.c
++++ b/get-edid/i2c.c
+@@ -15,7 +15,7 @@
+ 
+ //Ideas (but not too much actual code) taken from i2c-tools. Thanks guys.
+ 
+-int quiet;
++extern int quiet;
+ 
+ #define display(...) if (quiet == 0) { fprintf(stderr, __VA_ARGS__); }
+