KVM: PPC: Use CONFIG_PPC_BOOK3S define

Upstream recently added a new name for PPC64: Book3S_64.

So instead of using CONFIG_PPC64 we should use CONFIG_PPC_BOOK3S consotently.
That makes understanding the code easier (I hope).

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index c6db28c..b608c0b 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -69,7 +69,7 @@
 #define OP_STH  44
 #define OP_STHU 45
 
-#ifdef CONFIG_PPC64
+#ifdef CONFIG_PPC_BOOK3S
 static int kvmppc_dec_enabled(struct kvm_vcpu *vcpu)
 {
 	return 1;
@@ -86,7 +86,7 @@
 	unsigned long dec_nsec;
 
 	pr_debug("mtDEC: %x\n", vcpu->arch.dec);
-#ifdef CONFIG_PPC64
+#ifdef CONFIG_PPC_BOOK3S
 	/* mtdec lowers the interrupt line when positive. */
 	kvmppc_core_dequeue_dec(vcpu);
 
@@ -153,7 +153,7 @@
 
 	switch (get_op(inst)) {
 	case OP_TRAP:
-#ifdef CONFIG_PPC64
+#ifdef CONFIG_PPC_BOOK3S
 	case OP_TRAP_64:
 		kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
 #else