ASoC: davinci: kconfig: Prepare for AM43xx support

AM43xx have the same McASP IP as AM33xx and both platform uses eDMA. Modify
the Kconfig so it will be possible to add audio support for AM43xx based
boards later.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt

@@ -4,7 +4,7 @@ Required properties:
 - compatible :
 	"ti,dm646x-mcasp-audio"	: for DM646x platforms
 	"ti,da830-mcasp-audio"	: for both DA830 & DA850 platforms
-	"ti,am33xx-mcasp-audio"	: for AM33xx platforms (AM33xx, TI81xx)
+	"ti,am33xx-mcasp-audio"	: for AM33xx platforms (AM33xx, AM43xx, TI81xx)
 
 - reg : Should contain reg specifiers for the entries in the reg-names property.
 - reg-names : Should contain:

sound/soc/davinci/Kconfig

 config SND_DAVINCI_SOC
-	tristate "SoC Audio for the TI DAVINCI or AM33XX chip"
-	depends on ARCH_DAVINCI || SOC_AM33XX
+	tristate "SoC Audio for TI DAVINCI or AM33XX/AM43XX chips"
+	depends on ARCH_DAVINCI || SOC_AM33XX || SOC_AM43XX
 
 config SND_DAVINCI_SOC_I2S
 	tristate