vfio: move conditional up to hw/Makefile.objs

Instead of wrapping the entire Makefile.objs with an ifeq/endif, just
include the directory only for Linux.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190202072456.6468-4-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/Makefile.objs

@@ -30,7 +30,7 @@ devices-dirs-$(CONFIG_SOFTMMU) += ssi/
 devices-dirs-$(CONFIG_SOFTMMU) += timer/
 devices-dirs-$(CONFIG_TPM) += tpm/
 devices-dirs-$(CONFIG_SOFTMMU) += usb/
-devices-dirs-$(CONFIG_SOFTMMU) += vfio/
+devices-dirs-$(CONFIG_LINUX) += vfio/
 devices-dirs-$(CONFIG_SOFTMMU) += virtio/
 devices-dirs-$(CONFIG_SOFTMMU) += watchdog/
 devices-dirs-$(CONFIG_SOFTMMU) += xen/

hw/vfio/Makefile.objs

@@ -1,4 +1,3 @@
-ifeq ($(CONFIG_LINUX), y)
 obj-$(CONFIG_SOFTMMU) += common.o
 obj-$(CONFIG_PCI) += pci.o pci-quirks.o display.o
 obj-$(CONFIG_VFIO_CCW) += ccw.o
@@ -7,4 +6,3 @@ obj-$(CONFIG_VFIO_XGMAC) += calxeda-xgmac.o
 obj-$(CONFIG_VFIO_AMD_XGBE) += amd-xgbe.o
 obj-$(CONFIG_SOFTMMU) += spapr.o
 obj-$(CONFIG_VFIO_AP) += ap.o
-endif