Compile qemu-config only once

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Makefile

@@ -89,7 +89,7 @@ obj-y += buffered_file.o migration.o migration-tcp.o net.o qemu-sockets.o
 obj-y += qemu-char.o aio.o net-checksum.o savevm.o
 obj-y += msmouse.o ps2.o
 obj-y += qdev.o qdev-properties.o ssi.o
-obj-y += qint.o qstring.o qdict.o
+obj-y += qint.o qstring.o qdict.o qemu-config.o
 
 obj-$(CONFIG_BRLAPI) += baum.o
 obj-$(CONFIG_WIN32) += tap-win32.o

Makefile.target

@@ -156,7 +156,7 @@ endif
 ifdef CONFIG_SOFTMMU
 
 obj-y = vl.o monitor.o pci.o loader.o isa_mmio.o machine.o \
-        gdbstub.o gdbstub-xml.o msix.o ioport.o qemu-config.o
+        gdbstub.o gdbstub-xml.o msix.o ioport.o
 # virtio has to be here due to weird dependency between PCI and virtio-net.
 # need to fix this properly
 obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-console.o virtio-pci.o