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/zmap/cmake-json-0.14-fix.patch

@@ -0,0 +1,13 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 8bd825f..694d9b2 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -72,6 +72,8 @@ if(WITH_JSON)
+     endif()
+ 
+     add_definitions("-DJSON")
++    # JSON_CFLAGS is a list, i.e. semicolon-separated, convert it to space-separated
++    string(REPLACE ";" " " JSON_CFLAGS "${JSON_CFLAGS}")
+     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${JSON_CFLAGS}")
+ endif()
+