Place ISA in ART boot image name.

Depends upon:
https://android-review.googlesource.com/#/c/94096/2

Change-Id: I79bec60a17ea7cf9214e56f8035d4a1b80b0eeb6
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index 73e8494..7f3285c 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -23,9 +23,9 @@
 
 PRELOADED_CLASSES := frameworks/base/preloaded-classes
 
-LIBART_BOOT_IMAGE := /$(DEXPREOPT_BOOT_JAR_DIR)/boot.art
+LIBART_BOOT_IMAGE := /$(DEXPREOPT_BOOT_JAR_DIR)/boot-$(DEX2OAT_TARGET_ARCH).art
 
-DEFAULT_DEX_PREOPT_BUILT_IMAGE := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/boot.art
+DEFAULT_DEX_PREOPT_BUILT_IMAGE := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/boot-$(DEX2OAT_TARGET_ARCH).art
 
 DEFAULT_DEX_PREOPT_INSTALLED_IMAGE :=
 ifneq ($(PRODUCT_DEX_PREOPT_IMAGE_IN_DATA),true)