kvm: fix build error in ppc kvm due to memory_region_init_ram_ptr() change
Commit c5705a77 ("vmstate, memory: decouple vmstate from memory API") changed
the signature of memory_region_init_ram_ptr() but did not update a caller in
the ppc kvm module. Fix.
Signed-off-by: Avi Kivity <avi@redhat.com>