ASoC: fsl: Add support for QMC audio

The QMC audio is an ASoC component which provides DAIs
that use the QMC (QUICC Multichannel Controller) to transfer
the audio data.

It provides as many DAIs as the number of QMC channels it
references.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20230217145645.1768659-10-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/Kconfig

@@ -172,6 +172,15 @@ config SND_MPC52xx_DMA
 config SND_SOC_POWERPC_DMA
 	tristate
 
+config SND_SOC_POWERPC_QMC_AUDIO
+	tristate "QMC ALSA SoC support"
+	depends on CPM_QMC
+	help
+	  ALSA SoC Audio support using the Freescale QUICC Multichannel
+	  Controller (QMC).
+	  Say Y or M if you want to add support for SoC audio using Freescale
+	  QMC.
+
 comment "SoC Audio support for Freescale PPC boards:"
 
 config SND_SOC_MPC8610_HPCD

sound/soc/fsl/Makefile

@@ -28,6 +28,7 @@ snd-soc-fsl-easrc-objs := fsl_easrc.o
 snd-soc-fsl-xcvr-objs := fsl_xcvr.o
 snd-soc-fsl-aud2htx-objs := fsl_aud2htx.o
 snd-soc-fsl-rpmsg-objs := fsl_rpmsg.o
+snd-soc-fsl-qmc-audio-objs := fsl_qmc_audio.o
 
 obj-$(CONFIG_SND_SOC_FSL_AUDMIX) += snd-soc-fsl-audmix.o
 obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o
@@ -44,6 +45,7 @@ obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o
 obj-$(CONFIG_SND_SOC_FSL_XCVR) += snd-soc-fsl-xcvr.o
 obj-$(CONFIG_SND_SOC_FSL_AUD2HTX) += snd-soc-fsl-aud2htx.o
 obj-$(CONFIG_SND_SOC_FSL_RPMSG) += snd-soc-fsl-rpmsg.o
+obj-$(CONFIG_SND_SOC_POWERPC_QMC_AUDIO) += snd-soc-fsl-qmc-audio.o
 
 # MPC5200 Platform Support
 obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o