[media] ASoC: WL1273 FM radio: Access I2C IO functions through pointers

These changes are needed to keep up with the changes in the
MFD core and V4L2 parts of the wl1273 FM radio driver.

Use function pointers instead of exported functions for I2C IO.
Also move all preprocessor constants from the wl1273.h to
include/linux/mfd/wl1273-core.h.

Also update the year in the copyright statement.

Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index c48b23c..9726d6e 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -44,7 +44,7 @@
 	select SND_SOC_TWL6040 if TWL4030_CORE
 	select SND_SOC_UDA134X
 	select SND_SOC_UDA1380 if I2C
-	select SND_SOC_WL1273 if RADIO_WL1273
+	select SND_SOC_WL1273 if MFD_WL1273_CORE
 	select SND_SOC_WM2000 if I2C
 	select SND_SOC_WM8350 if MFD_WM8350
 	select SND_SOC_WM8400 if MFD_WM8400