Add drivers package

recipes/drivers/Cargo.toml

+[workspace]
+members = [
+    "ahcid",
+    "alxd",
+    "bgad",
+    "e1000d",
+    "nvmed",
+    "pcid",
+    "ps2d",
+    "rtl8168d",
+    "vboxd",
+    "vesad",
+    "xhcid"
+]

recipes/drivers/recipe.sh

+GIT=https://github.com/redox-os/drivers
+CARGOFLAGS=--all
+
+function recipe_update {
+    cp ../Cargo.toml ./
+}