vdso: x86 -- Drop DECLARE_VDSO macro

We're not sharing the code anymore so drop it.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
vdso: x86 -- Use dynamic symbols for parsing

New vDSO are in stripped format so use dynamic
symbols instead of sectioned ones.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>