misc: Clean up includes

This commit was created with scripts/clean-includes:
 ./scripts/clean-includes --git misc net/af-xdp.c plugins/*.c audio/pwaudio.c util/userfaultfd.c

All .c should include qemu/osdep.h first.  The script performs three
related cleanups:

* Ensure .c files include qemu/osdep.h first.
* Including it in a .h is redundant, since the .c  already includes
  it.  Drop such inclusions.
* Likewise, including headers qemu/osdep.h includes is redundant.
  Drop these, too.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

audio/pwaudio.c

@@ -11,7 +11,6 @@
 #include "qemu/osdep.h"
 #include "qemu/module.h"
 #include "audio.h"
-#include <errno.h>
 #include "qemu/error-report.h"
 #include "qapi/error.h"
 #include <spa/param/audio/format-utils.h>

net/af-xdp.c

@@ -13,7 +13,6 @@
 
 #include "qemu/osdep.h"
 #include <bpf/bpf.h>
-#include <inttypes.h>
 #include <linux/if_link.h>
 #include <linux/if_xdp.h>
 #include <net/if.h>

plugins/core.c

@@ -27,7 +27,6 @@
 #include "tcg/tcg.h"
 #include "tcg/tcg-op.h"
 #include "plugin.h"
-#include "qemu/compiler.h"
 
 struct qemu_plugin_cb {
     struct qemu_plugin_ctx *ctx;

plugins/loader.c

@@ -33,7 +33,6 @@
 #ifndef CONFIG_USER_ONLY
 #include "hw/boards.h"
 #endif
-#include "qemu/compiler.h"
 
 #include "plugin.h"
 

util/userfaultfd.c

@@ -18,7 +18,6 @@
 #include <poll.h>
 #include <sys/syscall.h>
 #include <sys/ioctl.h>
-#include <fcntl.h>
 
 typedef enum {
     UFFD_UNINITIALIZED = 0,