x86/build/vdso: Put generated linker scripts to $(obj)/

x86/build/vdso: Put generated linker scripts to $(obj)/

Let's put generated files to $(obj)/ rather than $(src)/ although
this is just a matter of taste because both are the same.

Signed-off-by: Masahiro Yamada <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>