Revert "gpio: Allow per-parent interrupt data"

This reverts commit 304802e5 which is
commit cfe6807d upstream.

It breaks the Android api, so revert it for now.  If it needs to come
back, it can do so in an abi-safe way.

Bug: 161946584
Change-Id: I0f1f7b4de721ff23d252eef9b55678c3b6053cb7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>