add module_arm64only product

64bit only systems won't load modules with mixed 32/64 binaries. We need
a 64bit only product to build with.

Bug: 205990590
Test: lunch module_arm64only && m
Change-Id: I050a673bfa95978e624e64004089fe7a2b8e0a95
Merged-In: I050a673bfa95978e624e64004089fe7a2b8e0a95
diff --git a/target/board/module_arm64only/BoardConfig.mk b/target/board/module_arm64only/BoardConfig.mk
new file mode 100644
index 0000000..3cabf05
--- /dev/null
+++ b/target/board/module_arm64only/BoardConfig.mk
@@ -0,0 +1,21 @@
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include build/make/target/board/BoardConfigModuleCommon.mk
+
+TARGET_ARCH := arm64
+TARGET_ARCH_VARIANT := armv8-a
+TARGET_CPU_VARIANT := generic
+TARGET_CPU_ABI := arm64-v8a
diff --git a/target/board/module_arm64only/README.md b/target/board/module_arm64only/README.md
new file mode 100644
index 0000000..0dd1699
--- /dev/null
+++ b/target/board/module_arm64only/README.md
@@ -0,0 +1,2 @@
+This device is suitable for an unbundled module targeted specifically to an
+arm64 device. 32 bit binaries will not be built.
diff --git a/target/product/module_arm64only.mk b/target/product/module_arm64only.mk
new file mode 100644
index 0000000..4e8d53e
--- /dev/null
+++ b/target/product/module_arm64only.mk
@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/module_common.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit_only.mk)
+
+PRODUCT_NAME := module_arm64only
+PRODUCT_BRAND := Android
+PRODUCT_DEVICE := module_arm64only