staging: android: binder: Add align_helper() macro

This patch adds align_helper() macro that will be used for enforcing
the desired alignment on 64bit systems where the alignment will differ
depending on the userspace used (32bit /64bit).

This patch is a temporary patch that will be extended with 32bit compat
handling.

Change-Id: I456330b4bb7c1a6b0e488227695c68862032882f
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
Git-commit: 8c9da6ee7e7e9cbecf4de4ae9335c74fdbf0df73
Git-repo: git://linux-arm.org/linux-2.6-armdroid.git


Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>