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/tools/cdecl/cdecl-2.5-lex.patch

@@ -0,0 +1,13 @@
+diff --git a/Makefile b/Makefile
+index 1643b74..8f1ae11 100644
+--- a/Makefile
++++ b/Makefile
+@@ -33,7 +33,7 @@ c++decl: cdgram.c cdlex.c cdecl.c
+ 	rm -f cdecl
+ 
+ cdlex.c: cdlex.l
+-	lex cdlex.l && mv lex.yy.c cdlex.c
++	flex cdlex.l && mv lex.yy.c cdlex.c
+ 
+ cdgram.c: cdgram.y
+ 	yacc cdgram.y && mv y.tab.c cdgram.c