allow disabling usb smartcard support

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/Makefile.objs

@@ -38,8 +38,10 @@ common-obj-$(CONFIG_DMA) += dma.o
 common-obj-$(CONFIG_I82374) += i82374.o
 common-obj-$(CONFIG_HPET) += hpet.o
 common-obj-$(CONFIG_APPLESMC) += applesmc.o
+ifeq ($(CONFIG_USB_SMARTCARD),y)
 common-obj-y += ccid-card-passthru.o
 common-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o
+endif
 common-obj-$(CONFIG_I8259) += i8259_common.o i8259.o
 common-obj-y += fifo.o
 common-obj-y += pam.o

hw/usb/Makefile.objs

@@ -20,7 +20,6 @@ common-obj-$(CONFIG_USB_NETWORK)      += dev-network.o
 
 # FIXME: make configurable too
 CONFIG_USB_BLUETOOTH := y
-CONFIG_USB_SMARTCARD := y
 common-obj-$(CONFIG_USB_BLUETOOTH)    += dev-bluetooth.o
 common-obj-$(CONFIG_USB_SMARTCARD)    += dev-smartcard-reader.o