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]

hw/net/stellaris_enet.c

@@ -6,10 +6,12 @@
  *
  * This code is licensed under the GPL.
  */
+
 #include "qemu/osdep.h"
 #include "hw/sysbus.h"
 #include "net/net.h"
 #include "qemu/log.h"
+#include "qemu/module.h"
 #include <zlib.h>
 
 //#define DEBUG_STELLARIS_ENET 1