KVM: x86 emulator: rename decode_cache::eip to _eip

The name eip conflicts with a field of the same name in x86_emulate_ctxt,
which we plan to fold decode_cache into.

The name _eip is unfortunate, but what's really needed is a refactoring
here, not a better name.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 39d8b04..7e452fe 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4560,13 +4560,13 @@
 
 	c->op_bytes = 2;
 	c->ad_bytes = 2;
-	c->eip = ctxt->eip + inc_eip;
+	c->_eip = ctxt->eip + inc_eip;
 	ret = emulate_int_real(ctxt, irq);
 
 	if (ret != X86EMUL_CONTINUE)
 		return EMULATE_FAIL;
 
-	ctxt->eip = c->eip;
+	ctxt->eip = c->_eip;
 	memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
 	kvm_rip_write(vcpu, ctxt->eip);
 	kvm_set_rflags(vcpu, ctxt->eflags);
@@ -4661,7 +4661,7 @@
 	}
 
 	if (emulation_type & EMULTYPE_SKIP) {
-		kvm_rip_write(vcpu, c->eip);
+		kvm_rip_write(vcpu, c->_eip);
 		return EMULATE_DONE;
 	}