KVM: constify kvm_arch_flush_remote_tlbs_memslot

memslots are stored in RCU and there should be no need to
change them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/mips/kvm/mips.c

@@ -997,7 +997,7 @@ void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
 }
 
 void kvm_arch_flush_remote_tlbs_memslot(struct kvm *kvm,
-					struct kvm_memory_slot *memslot)
+					const struct kvm_memory_slot *memslot)
 {
 	/* Let implementation handle TLB/GVA invalidation */
 	kvm_mips_callbacks->flush_shadow_memslot(kvm, memslot);