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/hw/timer/allwinner-a10-pit.c b/hw/timer/allwinner-a10-pit.c
index 22ceabe..763e109 100644
--- a/hw/timer/allwinner-a10-pit.c
+++ b/hw/timer/allwinner-a10-pit.c
@@ -20,6 +20,7 @@
 #include "sysemu/sysemu.h"
 #include "hw/timer/allwinner-a10-pit.h"
 #include "qemu/log.h"
+#include "qemu/module.h"
 
 static void a10_pit_update_irq(AwA10PITState *s)
 {