Fix fuzzer build.

Change-Id: Ice4e70b9b80a96c35877f1be5027ef0e7ad5513d
Reviewed-on: https://boringssl-review.googlesource.com/15504
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

crypto/rand_extra/CMakeLists.txt

diff --git a/crypto/rand_extra/CMakeLists.txt b/crypto/rand_extra/CMakeLists.txt
index 2841ef6..cdd7aa8 100644
--- a/crypto/rand_extra/CMakeLists.txt
+++ b/crypto/rand_extra/CMakeLists.txt
@@ -5,6 +5,7 @@
 
   OBJECT
 
+  deterministic.c
   forkunsafe.c
   fuchsia.c
   rand_extra.c