Add Soong tools to PATH

Change-Id: I8f8649106df4ba7cefbfa37a724ebe0635d90b76
diff --git a/core/envsetup.mk b/core/envsetup.mk
index f1c37c8..4b48b27 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -204,6 +204,8 @@
 endif
 endif
 
+SOONG_OUT_DIR := $(OUT_DIR)/soong
+
 DEBUG_OUT_DIR := $(OUT_DIR)/debug
 
 # Move the host or target under the debug/ directory
@@ -220,6 +222,7 @@
 HOST_OUT_release := $(HOST_OUT_ROOT_release)/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
 HOST_OUT_debug := $(HOST_OUT_ROOT_debug)/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
 HOST_OUT := $(HOST_OUT_$(HOST_BUILD_TYPE))
+SOONG_HOST_OUT := $(SOONG_OUT_DIR)/host/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
 # TODO: remove
 BUILD_OUT := $(HOST_OUT)
 
@@ -237,6 +240,7 @@
 OUT_DOCS := $(TARGET_COMMON_OUT_ROOT)/docs
 
 BUILD_OUT_EXECUTABLES := $(BUILD_OUT)/bin
+SOONG_HOST_OUT_EXECUTABLES := $(SOONG_HOST_OUT)/bin
 
 HOST_OUT_EXECUTABLES := $(HOST_OUT)/bin
 HOST_OUT_SHARED_LIBRARIES := $(HOST_OUT)/lib64