ARCv3: SMP: Add virtio interfaces to dtsi #188

Job	Run time
build (arc700, arc-elf, nsim_700_defconfig)	3m 26s
build (hs4x, arc-glibc, haps_hs_defconfig)	3m 42s
build (hs4x-pae40, arc-glibc, haps_hs_defconfig)	3m 45s
build (hs5x, arc32-glibc, haps_hs5x_defconfig)	3m 40s
build (hs5x-arc64-elf-build, arc64-elf, haps_hs5x_defconfig)	3m 31s
build (hs5x-hw-atomic64, arc32-glibc, haps_hs5x_defconfig)	3m 39s
build (hs6x, arc64-glibc, haps_arc64_defconfig)	3m 32s
build (hs6x-mmu48-16k, arc64-glibc, haps_arc64_defconfig)	3m 39s
build (hs6x-mmu48-64k, arc64-glibc, haps_arc64_defconfig)	3m 48s
build (hs6x-mmu52, arc64-glibc, haps_arc64_defconfig)	3m 43s
test (arc700)	23s
test (hs4x)	27s
test (hs4x-pae40)	27s
test (hs5x)	41s
test (hs5x-arc64-elf-build)	40s
test (hs5x-hw-atomic64)	39s
test (hs6x)	1m 2s
test (hs6x-mmu48-16k)	52s
test (hs6x-mmu48-64k)	49s
test (hs6x-mmu52)	51s
	43m 16s

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