Add rules.mk build file for Trusty am: 4356b4a5b8 am: d4d73f021e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/arrayvec/+/2883517

Change-Id: I14ffb4577c6f8ca9282bbcc01234a9896d71d2f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

cargo2rulesmk.json

diff --git a/cargo2rulesmk.json b/cargo2rulesmk.json
new file mode 100644
index 0000000..7ede1b0
--- /dev/null
+++ b/cargo2rulesmk.json
@@ -0,0 +1,3 @@
+{
+  "features": ""
+}

rules.mk

diff --git a/rules.mk b/rules.mk
new file mode 100644
index 0000000..f22f3a4
--- /dev/null
+++ b/rules.mk
@@ -0,0 +1,11 @@
+# This file is generated by cargo2rulesmk.py --run --config cargo2rulesmk.json.
+# Do not modify this file as changes will be overridden on upgrade.
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+MODULE := $(LOCAL_DIR)
+MODULE_CRATE_NAME := arrayvec
+MODULE_SRCS := \
+	$(LOCAL_DIR)/src/lib.rs \
+
+MODULE_RUST_EDITION := 2018
+include make/library.mk