drivers: staging: retire drivers/staging/goldfish

Android Studio Emulator (goldfish) migrated
to Intel HDA.

Signed-off-by: Roman Kiryanov <rkir@google.com>
Link: https://lore.kernel.org/r/20201112234907.3761694-1-rkir@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>