include/hw/hw.h: Don't include qemu-common.h

qemu-common.h should only be included by .c files.  Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

hw/hw.h includes qemu-common.h, but its users generally need only
hw_error() and qemu/module.h from it.  Move the former to hw/hw.h,
include the latter there, and drop the ill-advised include.
hw/misc/cbus.c now misses hw_error(), so include hw/hw.h there.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/misc/cbus.c

@@ -21,7 +21,7 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
+#include "hw/hw.h"
 #include "hw/irq.h"
 #include "hw/devices.h"
 #include "sysemu/sysemu.h"

include/hw/hw.h

@@ -2,7 +2,6 @@
 #ifndef QEMU_HW_H
 #define QEMU_HW_H
 
-#include "qemu-common.h"
 
 #if !defined(CONFIG_USER_ONLY) && !defined(NEED_CPU_H)
 #include "exec/cpu-common.h"
@@ -13,6 +12,7 @@
 #include "block/aio.h"
 #include "migration/vmstate.h"
 #include "qemu/log.h"
+#include "qemu/module.h"
 
 #ifdef NEED_CPU_H
 #if TARGET_LONG_BITS == 64
@@ -41,6 +41,8 @@ typedef void QEMUResetHandler(void *opaque);
 void qemu_register_reset(QEMUResetHandler *func, void *opaque);
 void qemu_unregister_reset(QEMUResetHandler *func, void *opaque);
 
+void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
+
 #ifdef NEED_CPU_H
 #if TARGET_LONG_BITS == 64
 #define VMSTATE_UINTTL_V(_f, _s, _v)                                  \

include/qemu-common.h

@@ -303,10 +303,6 @@ int qemu_openpty_raw(int *aslave, char *pty_name);
     sendto(sockfd, buf, len, flags, destaddr, addrlen)
 #endif
 
-/* Error handling.  */
-
-void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
-
 struct ParallelIOArg {
     void *buffer;
     int count;