Include qemu-common.h exactly where needed

No header includes qemu-common.h after this commit, as prescribed by
qemu-common.h's file comment.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-5-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c
block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c
target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h
target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h
target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h
target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and
net/tap-bsd.c fixed up]

target/i386/gdbstub.c

@@ -18,7 +18,6 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "cpu.h"
 #include "exec/gdbstub.h"
 

target/i386/kvm-stub.c

@@ -10,7 +10,6 @@
  *
  */
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "cpu.h"
 #include "kvm_i386.h"
 

target/i386/kvm.c

@@ -20,7 +20,6 @@
 #include <linux/kvm.h>
 #include "standard-headers/asm-x86/kvm_para.h"
 
-#include "qemu-common.h"
 #include "cpu.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/hw_accel.h"

target/i386/sev-stub.c

@@ -12,7 +12,6 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "sev_i386.h"
 
 SevInfo *sev_get_info(void)

target/i386/xsave_helper.c

@@ -4,7 +4,6 @@
  */
 #include "qemu/osdep.h"
 
-#include "qemu-common.h"
 #include "cpu.h"
 
 void x86_cpu_xsave_all_areas(X86CPU *cpu, X86XSaveArea *buf)