KVM: RISC-V: Use Makefile.kvm for common files

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20211121125451.9489-6-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/riscv/kvm/Makefile

@@ -5,14 +5,10 @@
 
 ccflags-y += -I $(srctree)/$(src)
 
-KVM := ../../../virt/kvm
+include $(srctree)/virt/kvm/Makefile.kvm
 
 obj-$(CONFIG_KVM) += kvm.o
 
-kvm-y += $(KVM)/kvm_main.o
-kvm-y += $(KVM)/coalesced_mmio.o
-kvm-y += $(KVM)/binary_stats.o
-kvm-y += $(KVM)/eventfd.o
 kvm-y += main.o
 kvm-y += vm.o
 kvm-y += vmid.o