BACKPORT: binder: move structs from core file to header file

Moving all structs to header file makes module more
extendable, and makes all these structs to be defined
in the same file.

Signed-off-by: Frankie.Chang <Frankie.Chang@mediatek.com>
Acked-by: Todd Kjos <tkjos@google.com>
Link: https://lore.kernel.org/r/1605063764-12930-2-git-send-email-Frankie.Chang@mediatek.com


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

Bug: 182234755
Change-Id: Ifd9c159195011e9311a5dda6e15f102b584d4b5a
(cherry picked from commit 1987f112)
Signed-off-by: Frankie Chang <frankie.chang@mediatek.com>