x86/build: work around older GNU ld not leaving .got.plt empty

x86/build: work around older GNU ld not leaving .got.plt empty

The initial three entries in .got.plt are "static", i.e. present
independent of actual entries allocation of which is triggered by
respective relocations. When no real entries are needed, halfway recent
ld discards the "static" portion of the table as well, but older GNU ld
fails to do so.

Fixes: dedb0aa42c6d ("x86/build: use --orphan-handling linker option if available")
Reported-by: Julien Grall <jgrall@amazon.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Tested-by: Julien Grall <jgrall@amazon.com>