Pass hwasan extra cflags to make.

Bug: 112438058
Test: SANITIZE_TARGET=hwaddress
Change-Id: If57e5f4cf78037992936ce94a98f017676b7e74b
diff --git a/cc/makevars.go b/cc/makevars.go
index 5b9ac1d..c4ef5f1 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -127,6 +127,8 @@
 	ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS", strings.Join(asanLdflags, " "))
 	ctx.Strict("ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES", strings.Join(asanLibs, " "))
 
+	ctx.Strict("HWADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS", strings.Join(hwasanCflags, " "))
+
 	ctx.Strict("CFI_EXTRA_CFLAGS", strings.Join(cfiCflags, " "))
 	ctx.Strict("CFI_EXTRA_LDFLAGS", strings.Join(cfiLdflags, " "))