ASoC: imx-ssi: Remove unused driver

The imx-ssi driver was only used by i.MX non-DT platforms.

Since 5.10-rc1, i.MX has been converted to a DT-only platform and all
board files are gone.

Remove the imx-ssi audio driver as there are no more users at all.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20201110203937.25684-6-festevam@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/Kconfig

@@ -228,15 +228,11 @@ endif # SND_POWERPC_SOC
 
 config SND_SOC_IMX_PCM_FIQ
 	tristate
-	default y if SND_SOC_IMX_SSI=y && (SND_SOC_FSL_SSI=m || SND_SOC_FSL_SPDIF=m) && (MXC_TZIC || MXC_AVIC)
+	default y if (SND_SOC_FSL_SSI=m || SND_SOC_FSL_SPDIF=m) && (MXC_TZIC || MXC_AVIC)
 	select FIQ
 
 if SND_IMX_SOC
 
-config SND_SOC_IMX_SSI
-	tristate
-	select SND_SOC_FSL_UTILS
-
 comment "SoC Audio support for Freescale i.MX boards:"
 
 config SND_SOC_EUKREA_TLV320

sound/soc/fsl/Makefile

@@ -53,9 +53,7 @@ obj-$(CONFIG_SND_MPC52xx_SOC_PCM030) += pcm030-audio-fabric.o
 obj-$(CONFIG_SND_MPC52xx_SOC_EFIKA) += efika-audio-fabric.o
 
 # i.MX Platform Support
-snd-soc-imx-ssi-objs := imx-ssi.o
 snd-soc-imx-audmux-objs := imx-audmux.o
-obj-$(CONFIG_SND_SOC_IMX_SSI) += snd-soc-imx-ssi.o
 obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o
 
 obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += imx-pcm-fiq.o