Add keyboard updater

keyboard-updater/default.nix

@@ -0,0 +1,26 @@
+{ stdenv, fetchFromGitHub, xxd, libusb }:
+
+stdenv.mkDerivation {
+  pname = "pinebook-pro-keyboard-updater";
+  version = "2019-11-24";
+
+  nativeBuildInputs = [
+    xxd
+  ];
+
+  buildInputs = [
+    libusb
+  ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -v updater $out/bin
+  '';
+
+  src = fetchFromGitHub {
+    owner = "ayufan-rock64";
+    repo = "pinebook-pro-keyboard-updater";
+    rev = "e2192c37456c6c3d0701ead62d56c320f80858b9";
+    sha256 = "1pwz2fdqlwvab3xswi97msn06znbzdlbx1j4qx8fmqkqfg8z260z";
+  };
+}

overlay.nix

@@ -35,4 +35,5 @@ in
   };
   linuxPackages_pinebookpro = linuxPackagesFor final.linux_pinebookpro;
   pinebookpro-firmware = callPackage ./firmware {};
+  pinebookpro-keyboard-updater = callPackage ./keyboard-updater {};
 }