Move x86 specific PC declarations to a separate file

x86 definitions (especially CPUState uses) prevent many files from
being compiled within libhw.

Move x86 specific declarations (APIC stuff) to a separate file.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/hw/apic.c b/hw/apic.c
index 3c90f4c..9029dad 100644
--- a/hw/apic.c
+++ b/hw/apic.c
@@ -18,6 +18,7 @@
  */
 #include "hw.h"
 #include "pc.h"
+#include "apic.h"
 #include "pci.h"
 #include "msix.h"
 #include "qemu-timer.h"
diff --git a/hw/apic.h b/hw/apic.h
new file mode 100644
index 0000000..132fcab
--- /dev/null
+++ b/hw/apic.h
@@ -0,0 +1,20 @@
+#ifndef APIC_H
+#define APIC_H
+
+typedef struct IOAPICState IOAPICState;
+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);
+qemu_irq *ioapic_init(void);
+void ioapic_set_irq(void *opaque, int vector, int level);
+void apic_reset_irq_delivered(void);
+int apic_get_irq_delivered(void);
+
+int cpu_is_bsp(CPUState *env);
+
+#endif
diff --git a/hw/ioapic.c b/hw/ioapic.c
index b0ad78f..7ad8018 100644
--- a/hw/ioapic.c
+++ b/hw/ioapic.c
@@ -22,6 +22,7 @@
 
 #include "hw.h"
 #include "pc.h"
+#include "apic.h"
 #include "qemu-timer.h"
 #include "host-utils.h"
 
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c
index a537855..89a423e 100644
--- a/hw/mc146818rtc.c
+++ b/hw/mc146818rtc.c
@@ -25,6 +25,7 @@
 #include "qemu-timer.h"
 #include "sysemu.h"
 #include "pc.h"
+#include "apic.h"
 #include "isa.h"
 #include "hpet_emul.h"
 
diff --git a/hw/pc.c b/hw/pc.c
index 2b3063d..ba14df0 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -23,6 +23,7 @@
  */
 #include "hw.h"
 #include "pc.h"
+#include "apic.h"
 #include "fdc.h"
 #include "pci.h"
 #include "vmware_vga.h"
diff --git a/hw/pc.h b/hw/pc.h
index d54959a..5bbe39a 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -35,21 +35,6 @@
 void pic_info(Monitor *mon);
 void irq_info(Monitor *mon);
 
-/* APIC */
-typedef struct IOAPICState IOAPICState;
-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);
-qemu_irq *ioapic_init(void);
-void ioapic_set_irq(void *opaque, int vector, int level);
-void apic_reset_irq_delivered(void);
-int apic_get_irq_delivered(void);
-
 /* i8254.c */
 
 #define PIT_FREQ 1193182
@@ -150,8 +135,6 @@
 
 void isa_ne2000_init(int base, int irq, NICInfo *nd);
 
-int cpu_is_bsp(CPUState *env);
-
 /* e820 types */
 #define E820_RAM        1
 #define E820_RESERVED   2