Angler: Move to SANITIZE_TARGET_ARCH

Use the new SANITIZE_TARGET_ARCH.

Bug: 29498013
Test: m SANITIZE_TARGET=address SANITIZE_LITE=true
Test: readelf -s $OUT/system/bin/app_process64 | grep asan
Change-Id: I7e7116e67e66f143ed0fca79913bec121913810d
(cherry picked from commit a71e834a5dde35debe7a1552013ee43c3007a402)
diff --git a/device.mk b/device.mk
index 4de9849..e2f3f7f 100644
--- a/device.mk
+++ b/device.mk
@@ -511,7 +511,7 @@
 # b/28992626
 # For app investigation, make ASAN-lite only sanitize 32-bit.
 ifeq (true,$(SANITIZE_LITE))
-  SANITIZE_ARCH := 32
+  SANITIZE_TARGET_ARCH := arm
 endif
 
 # b/29995499