ppc: Move spapr-related prototypes from xics.h into a seperate header file

When compiling with Clang in -std=gnu99 mode, there is a warning/error:

  CC      ppc64-softmmu/hw/intc/xics_spapr.o
In file included from /home/thuth/devel/qemu/hw/intc/xics_spapr.c:34:
/home/thuth/devel/qemu/include/hw/ppc/xics.h:203:34: error: redefinition of typedef 'sPAPRMachineState' is a C11 feature
      [-Werror,-Wtypedef-redefinition]
typedef struct sPAPRMachineState sPAPRMachineState;
                                 ^
/home/thuth/devel/qemu/include/hw/ppc/spapr_irq.h:25:34: note: previous definition is here
typedef struct sPAPRMachineState sPAPRMachineState;
                                 ^

We have to remove the duplicated typedef here and include "spapr.h" instead.
But "spapr.h" should not be included for the pnv machine files. So move
the spapr-related prototypes into a new file called "xics_spapr.h" instead.

Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

hw/intc/xics_kvm.c

@@ -34,6 +34,7 @@
 #include "sysemu/kvm.h"
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/xics.h"
+#include "hw/ppc/xics_spapr.h"
 #include "kvm_ppc.h"
 #include "qemu/config-file.h"
 #include "qemu/error-report.h"

hw/intc/xics_spapr.c

@@ -32,6 +32,7 @@
 #include "qemu/timer.h"
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/xics.h"
+#include "hw/ppc/xics_spapr.h"
 #include "hw/ppc/fdt.h"
 #include "qapi/visitor.h"
 

hw/ppc/spapr_irq.c

@@ -14,6 +14,7 @@
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/spapr_xive.h"
 #include "hw/ppc/xics.h"
+#include "hw/ppc/xics_spapr.h"
 #include "sysemu/kvm.h"
 
 #include "trace.h"

include/hw/ppc/xics.h

@@ -200,13 +200,6 @@ void ics_pic_print_info(ICSState *ics, Monitor *mon);
 void ics_resend(ICSState *ics);
 void icp_resend(ICPState *ss);
 
-typedef struct sPAPRMachineState sPAPRMachineState;
-
-void spapr_dt_xics(sPAPRMachineState *spapr, uint32_t nr_servers, void *fdt,
-                   uint32_t phandle);
-int xics_kvm_init(sPAPRMachineState *spapr, Error **errp);
-void xics_spapr_init(sPAPRMachineState *spapr);
-
 Object *icp_create(Object *cpu, const char *type, XICSFabric *xi,
                    Error **errp);
 

include/hw/ppc/xics_spapr.h

@@ -0,0 +1,37 @@
+/*
+ * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
+ *
+ * PAPR Virtualized Interrupt System, aka ICS/ICP aka xics
+ *
+ * Copyright (c) 2010, 2011 David Gibson, IBM Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef XICS_SPAPR_H
+#define XICS_SPAPR_H
+
+#include "hw/ppc/spapr.h"
+
+void spapr_dt_xics(sPAPRMachineState *spapr, uint32_t nr_servers, void *fdt,
+                   uint32_t phandle);
+int xics_kvm_init(sPAPRMachineState *spapr, Error **errp);
+void xics_spapr_init(sPAPRMachineState *spapr);
+
+#endif /* XICS_SPAPR_H */