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/libraries/allegro/nix-unstable-sandbox-fix.patch

@@ -0,0 +1,13 @@
+diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
+index 32ed053..73ba87f 100644
+--- a/docs/CMakeLists.txt
++++ b/docs/CMakeLists.txt
+@@ -72,7 +72,7 @@ foreach(page ${DOC_SRCS})
+     string(REPLACE "._tx" "" basename ${basename})
+ 
+     set(page ${CMAKE_CURRENT_SOURCE_DIR}/${page})
+-    if(${page} MATCHES "/build/")
++    if(${page} MATCHES ".+/build/")
+         set(txt_out ${CMAKE_CURRENT_BINARY_DIR}/build/${basename}.txt)
+         set(html_out ${CMAKE_CURRENT_BINARY_DIR}/build/${basename}.html)
+     else()