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/interpreters/guile/disable-gc-sensitive-tests.patch

@@ -0,0 +1,25 @@
+This patch disable GC-sensitive tests.  This is particularly useful when
+compiling with `-O0' (as is done with coverage analysis) since there may
+be many false references held on the stack, leading to the failure of
+such tests.
+
+--- a/test-suite/tests/gc.test
++++ b/test-suite/tests/gc.test
+@@ -67,6 +67,7 @@
+ 
+ (with-test-prefix "gc"
+   (pass-if "Unused modules are removed"
++    (throw 'unresolved)
+     (let* ((guard (make-guardian))
+            (total 1000))
+
+--- a/test-suite/tests/threads.test
++++ b/test-suite/tests/threads.test
+@@ -366,6 +366,7 @@
+ 	    (not (mutex-owner m))))
+ 
+         (pass-if "mutex with owner not retained (bug #27450)"
++          (throw 'unresolved)
+           (let ((g (make-guardian)))
+             (g (let ((m (make-mutex))) (lock-mutex m) m))
+