make --dylib mode work on linux

We're looking up skvm_jit where we need to look up _skvm_jit.

Change-Id: Iad00d2a371cbec590ebecc2ead15dc0aab5a1d4b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/285676
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed