Revert "netdevsim: copy addresses for both in and out paths"

This reverts commit e4decf4c which is
commit 2cf567f4 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I9dabfeaaa26dc579c27013e41e5d45457bbc0f2c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>