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/servers/scylladb/seastar-configure-script-paths.patch

@@ -0,0 +1,13 @@
+diff --git a/seastar/configure.py b/seastar/configure.py
+index 62d9c204..f6520635 100755
+--- a/seastar/configure.py
++++ b/seastar/configure.py
+@@ -924,7 +924,7 @@ with open(buildfile, 'w') as f:
+             command = ragel -G2 -o $out $in && sed -i -e '1h;2,$$H;$$!d;g' -re 's/static const char _nfa[^;]*;//g' $out
+             description = RAGEL $out
+         rule gen
+-            command = /bin/echo -e $text > $out
++            command = echo -e $text > $out
+             description = GEN $out
+         rule swagger
+             command = json/json2code.py -f $in -o $out