ppc: Let kvmppc_reset_htab() return 0 for !CONFIG_KVM

The !CONFIG_KVM implementation of kvmppc_reset_htab() returns -1
by default. Change this to return 0 so that we fall back to user space
HTAB allocation for emulated guests.

This fixes the make check failures for ppc64 emulated target.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
diff --git a/target-ppc/kvm_ppc.h b/target-ppc/kvm_ppc.h
index 309cbe0..5e1333d 100644
--- a/target-ppc/kvm_ppc.h
+++ b/target-ppc/kvm_ppc.h
@@ -180,7 +180,7 @@
 
 static inline int kvmppc_reset_htab(int shift_hint)
 {
-    return -1;
+    return 0;
 }
 
 static inline uint64_t kvmppc_rma_size(uint64_t current_size,