Revert "Angler: Move to SANITIZE_TARGET_ARCH"

This reverts commit a71e834a5dde35debe7a1552013ee43c3007a402.

Bug: 29498013
Test: m
Change-Id: Ie05981c87e2450d356983cbe09069a815bf63516
diff --git a/device.mk b/device.mk
index e2f3f7f..4de9849 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_TARGET_ARCH := arm
+  SANITIZE_ARCH := 32
 endif
 
 # b/29995499