apic: avoid passing CPUState from devices

Pass only APICState from pc.c.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/hw/apic.h b/hw/apic.h
index dc41400..e6bce1e 100644
--- a/hw/apic.h
+++ b/hw/apic.h
@@ -1,14 +1,16 @@
 #ifndef APIC_H
 #define APIC_H
 
+/* apic.c */
+typedef struct APICState APICState;
 void apic_deliver_irq(uint8_t dest, uint8_t dest_mode,
                              uint8_t delivery_mode,
                              uint8_t vector_num, uint8_t polarity,
                              uint8_t trigger_mode);
 int apic_init(CPUState *env);
-int apic_accept_pic_intr(CPUState *env);
-void apic_deliver_pic_intr(CPUState *env, int level);
-int apic_get_interrupt(CPUState *env);
+int apic_accept_pic_intr(APICState *s);
+void apic_deliver_pic_intr(APICState *s, int level);
+int apic_get_interrupt(APICState *s);
 void apic_reset_irq_delivered(void);
 int apic_get_irq_delivered(void);