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/libsodium/mingw-no-fortify.patch

@@ -0,0 +1,15 @@
+diff -Naur libsodium-1.0.18-orig/configure.ac libsodium-1.0.18/configure.ac
+--- libsodium-1.0.18-orig/configure.ac	2019-05-30 16:20:24.000000000 -0400
++++ libsodium-1.0.18/configure.ac	2021-08-11 08:09:54.653907245 -0400
+@@ -217,11 +217,6 @@
+ 
+ AC_CHECK_DEFINE([__wasi__], [WASI="yes"], [])
+ 
+-AC_CHECK_DEFINE([_FORTIFY_SOURCE], [], [
+-  AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2],
+-    [CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"])
+-])
+-
+ AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
+   [CFLAGS="$CFLAGS -fvisibility=hidden"])
+