ld/testsuite: Replace -Sw with -SW for readelf

-Sw is a typo.  It should be -SW for readelf.

	* testsuite/ld-i386/lea1d.d: Replace -Sw with -SW.
	* testsuite/ld-i386/lea1e.d: Likewise.
	* testsuite/ld-i386/lea1f.d: Likewise.
	* testsuite/ld-x86-64/lea1g.d: Likewise.
	* testsuite/ld-x86-64/lea1h.d: Likewise.
	* testsuite/ld-x86-64/lea1i.d: Likewise.
	* testsuite/ld-x86-64/lea1j.d: Likewise.
	* testsuite/ld-x86-64/lea1k.d: Likewise.
	* testsuite/ld-x86-64/lea1l.d: Likewise.