ASoC: tpa6130a2: Remove model_id from platform data

The model_id is no longer needed within the platform_data
for the TPA driver since the model of TPA specified
with the device name (tpa6130a2/tpa6140a2).

Also update rx51 (the only affected user) to use the device name rather
than platform data.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/tpa6130a2.c

@@ -33,6 +33,11 @@
 
 #include "tpa6130a2.h"
 
+enum tpa_model {
+	TPA6130A2,
+	TPA6140A2,
+};
+
 static struct i2c_client *tpa6130a2_client;
 
 /* This struct is used to save the context */