hw: move headers to include/

Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

include/hw/boards.h

@@ -0,0 +1,53 @@
+/* Declarations for use by board files for creating devices.  */
+
+#ifndef HW_BOARDS_H
+#define HW_BOARDS_H
+
+#include "sysemu/blockdev.h"
+#include "hw/qdev.h"
+
+#define DEFAULT_MACHINE_OPTIONS \
+    .boot_order = "cad"
+
+typedef struct QEMUMachineInitArgs {
+    ram_addr_t ram_size;
+    const char *boot_device;
+    const char *kernel_filename;
+    const char *kernel_cmdline;
+    const char *initrd_filename;
+    const char *cpu_model;
+} QEMUMachineInitArgs;
+
+typedef void QEMUMachineInitFunc(QEMUMachineInitArgs *args);
+
+typedef void QEMUMachineResetFunc(void);
+
+typedef struct QEMUMachine {
+    const char *name;
+    const char *alias;
+    const char *desc;
+    QEMUMachineInitFunc *init;
+    QEMUMachineResetFunc *reset;
+    BlockInterfaceType block_default_type;
+    int max_cpus;
+    unsigned int no_serial:1,
+        no_parallel:1,
+        use_virtcon:1,
+        use_sclp:1,
+        no_floppy:1,
+        no_cdrom:1,
+        no_sdcard:1;
+    int is_default;
+    const char *default_machine_opts;
+    const char *boot_order;
+    GlobalProperty *compat_props;
+    struct QEMUMachine *next;
+    const char *hw_version;
+} QEMUMachine;
+
+int qemu_register_machine(QEMUMachine *m);
+QEMUMachine *find_default_machine(void);
+
+extern QEMUMachine *current_machine;
+
+#endif