The driver can be compile tested with !CONFIG_OF making certain data
unused:
sound/soc/samsung/i2s.c:1646:42: warning: ‘i2sv5_dai_type_i2s1’ defined but not used [-Wunused-const-variable=]
sound/soc/samsung/i2s.c:1639:42: warning: ‘i2sv7_dai_type’ defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski<krzk@xxxxxxxxxx>