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/khronos-ocl-icd-loader/tracing.patch

@@ -0,0 +1,13 @@
+diff --git a/loader/icd.h b/loader/icd.h
+index 34751e9..01a33fd 100644
+--- a/loader/icd.h
++++ b/loader/icd.h
+@@ -123,7 +123,7 @@ void khrIcdContextPropertiesGetPlatform(
+     cl_platform_id *outPlatform);
+ 
+ // internal tracing macros
+-#if 0
++#if 1
+     #include <stdio.h>
+     #define KHR_ICD_TRACE(...) \
+     do \