ASoC: omap: Kconfig: SND_OMAP_SOC_OMAP_ABE_TWL6040 to select CLK_TWL6040

The pdmclk is needed for McPDM. It is generated by twl6040.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/omap/Kconfig

@@ -107,6 +107,7 @@ config SND_OMAP_SOC_OMAP_ABE_TWL6040
 	select SND_SOC_TWL6040
 	select SND_SOC_DMIC
 	select COMMON_CLK_PALMAS if (SOC_OMAP5 && MFD_PALMAS)
+	select CLK_TWL6040
 	help
 	  Say Y if you want to add support for SoC audio on OMAP boards using
 	  ABE and twl6040 codec. This driver currently supports: