Generate rules.mk for virtio-drivers crate

Generated by `cargo2rulesmk.py --run`.

Change-Id: I7446a36ea4d8dbd9fa9ae5c28125327fc4c31709
diff --git a/rules.mk b/rules.mk
new file mode 100644
index 0000000..fe61b75
--- /dev/null
+++ b/rules.mk
@@ -0,0 +1,20 @@
+# This file is generated by cargo2rulesmk.py --run.
+# Do not modify this file as changes will be overridden on upgrade.
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+MODULE := $(LOCAL_DIR)
+MODULE_CRATE_NAME := virtio_drivers
+MODULE_SRCS := \
+	$(LOCAL_DIR)/src/lib.rs \
+
+MODULE_RUST_EDITION := 2018
+MODULE_RUSTFLAGS += \
+	--cfg 'feature="alloc"' \
+	--cfg 'feature="default"' \
+
+MODULE_LIBRARY_DEPS := \
+	external/rust/crates/bitflags \
+	external/rust/crates/log \
+	external/rust/crates/zerocopy \
+
+include make/library.mk