Add la_symbind32 to x86-64 audit tests

la_symbind32 is used for x32 in x86-64 audit tests.  We should define
both la_symbind32 and la_symbind64 in x86-64 audit tests.

	* sysdeps/x86_64/tst-auditmod10b.c (la_symbind32): New.
	* sysdeps/x86_64/tst-auditmod4b.c (la_symbind32): Likewise.
	* sysdeps/x86_64/tst-auditmod5b.c (la_symbind32): Likewise.
	* sysdeps/x86_64/tst-auditmod6b.c (la_symbind32): Likewise.
	* sysdeps/x86_64/tst-auditmod6c.c (la_symbind32): Likewise.
	* sysdeps/x86_64/tst-auditmod7b.c (la_symbind32): Likewise.