char: move socket chardev to its own file

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eric Blake <eblake@redhat.com>

chardev/Makefile.objs

@@ -4,5 +4,6 @@ chardev-obj-y += char-io.o
 chardev-obj-y += char-mux.o
 chardev-obj-y += char-null.o
 chardev-obj-y += char-ringbuf.o
+chardev-obj-y += char-socket.o
 chardev-obj-$(CONFIG_WIN32) += char-win.o
 chardev-obj-$(CONFIG_WIN32) += char-win-stdio.o

include/sysemu/char.h

@@ -443,6 +443,7 @@ void qemu_chr_set_feature(Chardev *chr,
                           ChardevFeature feature);
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
 int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len);
+int qemu_chr_wait_connected(Chardev *chr, Error **errp);
 
 #define TYPE_CHARDEV "chardev"
 #define CHARDEV(obj) OBJECT_CHECK(Chardev, (obj), TYPE_CHARDEV)