Move BoringSSL indication to NativeConstants

Toucing NativeCrypto causes System.loadLibrary(...) to be called which
causes classloader initialization to fail during compile time. To allow
more to be initialized, move this to NativeConstants.

Bug: 21036900
Change-Id: I07f0f5be9559a9fa9a652d1bcd82a9f88640653e
2 files changed