Include qemu/module.h where needed, drop it from qemu-common.h

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c
hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c;
ui/cocoa.m fixed up]
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index b2cf593..7ca5d97 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -29,6 +29,7 @@
 #include "io/channel-websock.h"
 #include "io/net-listener.h"
 #include "qemu/error-report.h"
+#include "qemu/module.h"
 #include "qemu/option.h"
 #include "qapi/error.h"
 #include "qapi/clone-visitor.h"