thermal: Add property for thermal testing.

Add property to disable usb overheat mitigation that prevent device
offline during thermal testing in chamber.

Bug: 111762741
Test: Run thermal test in chamber
Change-Id: I23a760c8e31979b38ae89cd6750ae107605d5c3b

device.mk

@@ -91,6 +91,8 @@ PRODUCT_COPY_FILES += \
 ifneq (,$(filter userdebug eng, $(TARGET_BUILD_VARIANT)))
   PRODUCT_COPY_FILES += \
       $(LOCAL_PATH)/init.hardware.diag.rc.userdebug:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_HARDWARE).diag.rc
+  PRODUCT_COPY_FILES += \
+      $(LOCAL_PATH)/init.hardware.chamber.rc.userdebug:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_HARDWARE).chamber.rc
 else
   PRODUCT_COPY_FILES += \
       $(LOCAL_PATH)/init.hardware.diag.rc.user:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_HARDWARE).diag.rc

init.hardware.chamber.rc.userdebug

@@ -0,0 +1,18 @@
+#
+# Copyright (C) 2018 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.
+#
+
+on property:persist.vendor.disable.usb.overheat.mitigation=1
+    write /sys/module/smb_lib/parameters/enable_ovh 0