Add ld.config.txt for Android 8.x+ trees

- Fixes the ld.config.txt errors in recovery log which may prevent
  decryption and shell commands from working properly

Change-Id: I0e057525cdda39e8ac10115d37e2cb882b9c4844

etc/Android.mk

@@ -60,6 +60,15 @@ ifeq ($(shell test $(PLATFORM_SDK_VERSION) -ge 26; echo $$?),0)
 
     LOCAL_SRC_FILES := init.recovery.hlthchrg26.rc
     include $(BUILD_PREBUILT)
+
+    include $(CLEAR_VARS)
+    LOCAL_MODULE := init.recovery.ldconfig.rc
+    LOCAL_MODULE_TAGS := eng
+    LOCAL_MODULE_CLASS := RECOVERY_EXECUTABLES
+    LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
+
+    LOCAL_SRC_FILES := init.recovery.ldconfig.rc
+    include $(BUILD_PREBUILT)
 else
     include $(CLEAR_VARS)
     LOCAL_MODULE := init.recovery.hlthchrg.rc

etc/init.rc

@@ -1,4 +1,5 @@
 import /init.recovery.logd.rc
+import /init.recovery.ldconfig.rc
 import /init.recovery.mksh.rc
 import /init.recovery.usb.rc
 import /init.recovery.service.rc

etc/init.recovery.ldconfig.rc

@@ -0,0 +1,2 @@
+on fs
+    export LD_CONFIG_FILE /sbin/ld.config.txt

prebuilt/Android.mk

@@ -370,6 +370,7 @@ ifeq ($(shell test $(PLATFORM_SDK_VERSION) -gt 25; echo $$?),0)
     RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libvintf.so
     RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libtinyxml2.so
     RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/android.hidl.token@1.0.so
+    RELINK_SOURCE_FILES += $(TARGET_OUT_ETC)/ld.config.txt
     ifneq ($(wildcard system/core/libkeyutils/Android.bp),)
         RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libkeyutils.so
     endif