potter: manage advertised features for XT1687

* Drop unneeded features after flash using releasetools

BoardConfig.mk

@@ -147,6 +147,9 @@ TARGET_RECOVERY_FSTAB := $(DEVICE_PATH)/rootdir/etc/fstab.qcom
 TARGET_USERIMAGES_USE_EXT4 := true
 TARGET_USERIMAGES_USE_F2FS := true
 
+# Releasetools
+TARGET_RELEASETOOLS_EXTENSIONS := $(DEVICE_PATH)/releasetools
+
 # SELinux
 include device/qcom/sepolicy/sepolicy.mk
 BOARD_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy

configs/check_features.sh

@@ -0,0 +1,13 @@
+#!/sbin/sh
+
+sku=`getprop ro.boot.hardware.sku`
+
+if [ "$sku" = "XT1687" ]; then
+    # XT1687 doesn't have NFC chip
+    rm /system/etc/permissions/android.hardware.nfc.xml
+    rm /system/etc/permissions/android.hardware.nfc.hce.xml
+    rm /system/etc/permissions/com.android.nfc_extras.xml
+else
+    # Only XT1687 variant got a compass
+    rm /system/etc/permissions/android.hardware.sensor.compass.xml
+fi

device.mk

@@ -250,6 +250,10 @@ PRODUCT_PACKAGES += \
     init.qcom.rc \
     ueventd.qcom.rc
 
+# Releasetools script
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/configs/check_features.sh:install/bin/check_features.sh
+
 # RIL
 PRODUCT_PACKAGES += \
     librmnetctl \

releasetools/releasetools.py

@@ -0,0 +1,28 @@
+# Copyright (C) 2016 The CyanogenMod Project
+# Copyright (C) 2017 The LineageOS 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.
+
+
+def IncrementalOTA_InstallEnd(info):
+  ReplaceDeviceConfig(info)
+
+def FullOTA_InstallEnd(info):
+  ReplaceDeviceConfig(info)
+
+def ReplaceDeviceConfig(info):
+  info.script.Mount("/system")
+  info.script.AppendExtra('ui_print("Checking NFC and compass support");')
+  info.script.AppendExtra('run_program("/sbin/sh", "/tmp/install/bin/check_features.sh");')
+  info.script.Unmount("/system")
+