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>

nixos/doc/manual/Makefile

@@ -0,0 +1,30 @@
+.PHONY: all
+all: manual-combined.xml
+
+.PHONY: debug
+debug: generated manual-combined.xml
+
+manual-combined.xml: generated *.xml **/*.xml
+	rm -f ./manual-combined.xml
+	nix-shell --pure -Q --packages xmloscopy \
+		--run "xmloscopy --docbook5 ./manual.xml ./manual-combined.xml"
+
+.PHONY: format
+format:
+	nix-shell --pure -Q --packages xmlformat \
+		--run "find ../../ -iname '*.xml' -type f -print0 | xargs -0 -I{} -n1 \
+		xmlformat --config-file '../xmlformat.conf' -i {}"
+
+.PHONY: fix-misc-xml
+fix-misc-xml:
+	find . -iname '*.xml' -type f \
+		-exec ../varlistentry-fixer.rb {} ';'
+
+.PHONY: clean
+clean:
+	rm -f manual-combined.xml generated
+
+generated:
+	nix-build ../../release.nix \
+		--attr manualGeneratedSources.x86_64-linux \
+		--out-link ./generated