Verify init scripts for correctness during build

Bug: 36970783
Test: builds pass without failures
Test: builds fail with failures in init files used via LOCAL_INIT_RC,
      PRODUCT_COPY_FILES, or TARGET_PREBUILT

Change-Id: Ia98793776b365733ca8f0174dc228326a6edf041
diff --git a/core/config.mk b/core/config.mk
index 6c062a6..7d4ef04 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -619,6 +619,7 @@
 CKATI := $(prebuilt_build_tools_bin)/ckati
 DEPMOD := $(HOST_OUT_EXECUTABLES)/depmod
 FILESLIST := $(SOONG_HOST_OUT_EXECUTABLES)/fileslist
+HOST_INIT_VERIFIER := $(HOST_OUT_EXECUTABLES)/host_init_verifier
 MAKEPARALLEL := $(prebuilt_build_tools_bin)/makeparallel
 SOONG_JAVAC_WRAPPER := $(SOONG_HOST_OUT_EXECUTABLES)/soong_javac_wrapper
 SOONG_ZIP := $(SOONG_HOST_OUT_EXECUTABLES)/soong_zip