KVM: Rename kvm_arch_ops to kvm_x86_ops

This patch just renames the current (misnamed) _arch namings to _x86 to
ensure better readability when a real arch layer takes place.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index 660243b..6b094b4 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -274,7 +274,7 @@
 			access_bits &= ~PT_WRITABLE_MASK;
 			if (is_writeble_pte(spte)) {
 				spte &= ~PT_WRITABLE_MASK;
-				kvm_arch_ops->tlb_flush(vcpu);
+				kvm_x86_ops->tlb_flush(vcpu);
 			}
 			if (write_fault)
 				*ptwrite = 1;