(soong) Add -fsanitize= argument to assembly flags.

It allows use of sanitizer preprocessor macros (like __has_feature())
in assembly files.

Bug: 112438058
Test: SANITIZE_TARGET=hwaddress
Change-Id: Id3fed5492ab9473cbb13cd6c0485302412e8b1de
diff --git a/cc/makevars.go b/cc/makevars.go
index 51089fd..4af0a99 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -130,6 +130,7 @@
 	ctx.Strict("HWADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS", strings.Join(hwasanCflags, " "))
 
 	ctx.Strict("CFI_EXTRA_CFLAGS", strings.Join(cfiCflags, " "))
+	ctx.Strict("CFI_EXTRA_ASFLAGS", strings.Join(cfiAsflags, " "))
 	ctx.Strict("CFI_EXTRA_LDFLAGS", strings.Join(cfiLdflags, " "))
 
 	ctx.Strict("INTEGER_OVERFLOW_EXTRA_CFLAGS", strings.Join(intOverflowCflags, " "))