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 1987f112f1425cba2671d878f6952087e9456a0a)
Signed-off-by: Frankie Chang <frankie.chang@mediatek.com>
(cherry picked from commit a9c29b897d9ed7cec7f11c59f1035c96c09f4b96)