Split WITHOUT_CLANG to WITHOUT_HOST_CLANG and WITHOUT_TARGET_CLANG

Still keep WITHOUT_CLANG, which enables both.

Bug: 13402154
Change-Id: I32cb668223997719875751bf3d64f592d6086830
diff --git a/core/binary.mk b/core/binary.mk
index bb83126..c57a793 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -143,7 +143,7 @@
   my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
 endif
 
-ifeq ($(strip $($(LOCAL_2ND_ARCH_VAR_PREFIX)WITHOUT_CLANG)),true)
+ifeq ($(strip $($(LOCAL_2ND_ARCH_VAR_PREFIX)WITHOUT_$(my_prefix)CLANG)),true)
   LOCAL_CLANG :=
 endif