KVM: mips: Use Makefile.kvm for common files

# Makefile for KVM support for MIPS

#

include $(srctree)/virt/kvm/Makefile.kvm

ccflags-y += -Ivirt/kvm -Iarch/mips/kvm

kvm-y := $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o eventfd.o binary_stats.o)

kvm-$(CONFIG_CPU_HAS_MSA) += msa.o

kvm-y +=    mips.o emulate.o entry.o \