libpayload: defer including .xcompile

It needs to come after DOTCONFIG so that the compiler decision can
be made.

Change-Id: I5c6730ac58ab8731f07bb7c5161b2d0a59588e28
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10801
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed