capabilities: correct the <<-operator width everwhere

The <<-operator here needs to always be 64bit, so use a variable instead
of trying to pick the right bit width, which will be arch-sensitive.

BUG=chromium-os:38643
TEST=link and daisy build, both pass security_Minijail

Change-Id: Ifab3037bf74f09256924993a8e91315b4b0ac998
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/42806
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
1 file changed