egl/android: Cancel any outstanding ANativeBuffer in surface destructor

That is, call ANativeWindow::cancelBuffer in droid_destroy_surface().

This should prevent application deadlock when the app destroys the
EGLSurface after EGL has acquired a buffer from SurfaceFlinger
(ANativeWindow::dequeueBuffer) but before EGL has released it
(ANativeWindow::enqueueBuffer).

This patch is part of a series for fixing
android.hardware.camera2.cts.RobustnessTest#testAbandonRepeatingRequestSurface
on Chrome OS x86 devices.

Cc: [email protected]
Cc: Tomasz Figa <[email protected]>
Cc: Tapani Pälli <[email protected]>
Reviewed-by: Nicolas Boichat <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

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