libhdrplusclient: Fix AOSP builds

If vendor/google_easel doesn't exist, use a dummy
implmentation for libhdrplusclient.

Test: make
Bug: 36403152

Merged-Id: I77e75e8c1e81bc62a93993182a8cc27751d181d0
Merged-Id: I1b045d9825e634c7fefefeabf0e0bd4c08df2505
Change-Id: I1b045d9825e634c7fefefeabf0e0bd4c08df2505
1 file changed
tree: 8757798ec81ff5b2a0ed7693bd80d4928c5a5b2d
  1. camera/