check: Only test ioh3420 when it is compiled in

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>

tests/Makefile.include

@@ -280,8 +280,8 @@ check-qtest-i386-y += tests/pvpanic-test$(EXESUF)
 gcov-files-i386-y += i386-softmmu/hw/misc/pvpanic.c
 check-qtest-i386-y += tests/i82801b11-test$(EXESUF)
 gcov-files-i386-y += hw/pci-bridge/i82801b11.c
-check-qtest-i386-y += tests/ioh3420-test$(EXESUF)
-gcov-files-i386-y += hw/pci-bridge/ioh3420.c
+check-qtest-i386-$(CONFIG_IOH3420) += tests/ioh3420-test$(EXESUF)
+gcov-files-i386-$(CONFIG_IOH3420) += hw/pci-bridge/ioh3420.c
 check-qtest-i386-y += tests/usb-hcd-ohci-test$(EXESUF)
 gcov-files-i386-y += hw/usb/hcd-ohci.c
 check-qtest-i386-y += tests/usb-hcd-uhci-test$(EXESUF)