sdcc: use nativeBuildInputs

Ref https://github.com/jtojnar/nixpkgs-hammering/blob/master/explanations/build-tools-in-build-inputs.md

Changed files
+3 -1
pkgs
development
compilers
+3 -1
pkgs/development/compilers/sdcc/default.nix
···
sha256 = "042fxw5mnsfhpc0z9lxfsw88kdkm32pwrxacp88kj2n2dy0814a8";
};
-
buildInputs = [ autoconf bison boost flex gputils texinfo zlib ];
+
buildInputs = [ boost gputils texinfo zlib ];
+
+
nativeBuildInputs = [ autoconf bison flex ];
configureFlags = map (f: "--disable-${f}-port") excludedPorts;