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.

(cherry picked from commit f5b4518ebe23c76f931ddb157c44503c2f6b7dee)

Bug: 21036900
Change-Id: I07f0f5be9559a9fa9a652d1bcd82a9f88640653e
2 files changed