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/networking/mosh/bash_completion_datadir.patch

@@ -0,0 +1,19 @@
+diff --git a/configure.ac b/configure.ac
+index 3ad983d..ff8ff96 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -476,13 +476,7 @@ AS_IF([echo "$protobuf_LIBS" | grep -q -- -pthread],
+ 
+ # Bash completion needs to ask where it goes if >= 2.0 is installed.
+ AS_IF([test "$install_completion" != no],
+-  [PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0],
+-     [if test "$prefix" = "NONE"; then
+-        completions="`pkg-config --variable=completionsdir bash-completion`"
+-      else
+-        completions="`pkg-config --define-variable=prefix=$prefix --variable=completionsdir bash-completion`"
+-      fi],
+-     [completions="${sysconfdir}/bash_completion.d"])
++   [completions="`pkg-config --define-variable=datadir=$datadir --variable=completionsdir bash-completion`"]
+    AC_SUBST([completions])])
+ 
+ AC_CONFIG_FILES([