cmd/go: add -Wl,-Bsymbolic-functions to cgo flags whitelist

Closes #41199

Change-Id: Iab69358e8c39e6d2b2797c7ce750df63aa7e96b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/252698
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/cmd/go/internal/work/security.go b/src/cmd/go/internal/work/security.go
index 3ee68ac..d2a2697 100644
--- a/src/cmd/go/internal/work/security.go
+++ b/src/cmd/go/internal/work/security.go
@@ -177,6 +177,7 @@
 	re(`-Wl,-Bdynamic`),
 	re(`-Wl,-berok`),
 	re(`-Wl,-Bstatic`),
+	re(`-Wl,-Bsymbolic-functions`),
 	re(`-WL,-O([^@,\-][^,]*)?`),
 	re(`-Wl,-d[ny]`),
 	re(`-Wl,--disable-new-dtags`),