Exported symbols with protected visibility (change made in the next
patch) have a relocation type that is incompatible with passing their
address to dladdr(). Instead we can use a static local variable.

Bug b/110884149

Change-Id: I3e38280276ec00913b28ff97b007490619a99f58
Reviewed-on: https://swiftshader-review.googlesource.com/19710Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>