target/ppc: Make hash64_opts field mandatory for 64-bit hash MMUs
Currently some cpus set the hash64_opts field in the class structure, with specific details of their variant of the 64-bit hash mmu. For the remaining cpus with that mmu, ppc_hash64_realize() fills in defaults. But there are only a couple of cpus that use those fallbacks, so just have them to set the has64_opts field instead, simplifying the logic. Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Reviewed-by: NCédric Le Goater <clg@kaod.org> Reviewed-by: NGreg Kurz <groug@kaod.org>
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