LF-5093-5: sound: soc: fsl: imx pcm512x amp select

Add optional headphone amplifier supported by some
viriations of hifiberry audio hats such us DAC2.

Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>

sound/soc/fsl/Kconfig

@@ -389,9 +389,10 @@ config SND_SOC_IMX_PDM_MIC
 	  with PDM microphones on SAI.
 
 config SND_SOC_IMX_PCM512X
-	tristate "SoC Audio support for i.MX boards with PCM512x"
+	tristate "SoC Audio support for i.MX boards with PCM512x and headphone amp"
 	depends on OF && I2C
 	select SND_SOC_PCM512x_I2C
+	select SND_SOC_TPA6130A2
 	select SND_SOC_IMX_PCM_DMA
 	select SND_SOC_FSL_SAI
 	select SND_SOC_FSL_UTILS