hw/tricore/Makefile.objs: Create CONFIG_* for tricore

Add the new configs to default-configs/tricore-sofmmu.mak.

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190202072456.6468-26-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

default-configs/tricore-softmmu.mak

@@ -0,0 +1 @@
+CONFIG_TRICORE=y

hw/tricore/Makefile.objs

@@ -1 +1 @@
-obj-y += tricore_testboard.o
+obj-$(CONFIG_TRICORE) += tricore_testboard.o