Relink adbd needed in android 8.1

* adbd no longer goes to root/sbin instead it's
  going to system/bin reference:
  https://github.com/omnirom/android_system_core/commit/93defc17f376041437e5157a7c4d9e0344441811

Change-Id: Ib2bc5e0bb3ac868741fa3feacac5ef68aa1daa4b
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index 7b950fc..b54dda2 100644
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -34,6 +34,9 @@
 RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/fsck.fat
 RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/fatlabel
 RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/mkfs.fat
+ifeq ($(shell test $(PLATFORM_SDK_VERSION) -ge 27; echo $$?),0)
+    RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/adbd
+endif
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/e2fsck
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/mke2fs
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/tune2fs