[POWERPC] Rename get_property to of_get_property: sound

sound/aoa/codecs/snd-aoa-codec-onyx.c

sound/aoa/codecs/snd-aoa-codec-tas.c

sound/aoa/core/snd-aoa-gpio-feature.c

sound/aoa/fabrics/snd-aoa-fabric-layout.c

sound/aoa/soundbus/core.c

sound/aoa/soundbus/i2sbus/i2sbus-core.c

sound/oss/dmasound/dmasound_awacs.c

sound/oss/dmasound/tas_common.c

sound/ppc/pmac.c

sound/ppc/tumbler.c