ASoC: fsl: mpc8610_hpcd: Remove unused driver

The mpc8610_hpcd.c driver depends on CONFIG_MPC8610_HPCD which was
removed in commit 248667f8 ("powerpc: drop HPCD/MPC8610 evaluation
platform support"). That makes the driver unbuildable and unusable, so
remove it.

Depends-on: 248667f8 ("powerpc: drop HPCD/MPC8610 evaluation platform support")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20231122062712.2250426-1-mpe@ellerman.id.auSigned-off-by: Mark Brown <broonie@kernel.org>

MAINTAINERS

@@ -8581,7 +8581,6 @@ L:	linuxppc-dev@lists.ozlabs.org
 S:	Maintained
 F:	sound/soc/fsl/fsl*
 F:	sound/soc/fsl/imx*
-F:	sound/soc/fsl/mpc8610_hpcd.c
 
 FREESCALE SOC SOUND QMC DRIVER
 M:	Herve Codina <herve.codina@bootlin.com>

sound/soc/fsl/Kconfig

@@ -183,19 +183,6 @@ config SND_SOC_POWERPC_QMC_AUDIO
 
 comment "SoC Audio support for Freescale PPC boards:"
 
-config SND_SOC_MPC8610_HPCD
-	tristate "ALSA SoC support for the Freescale MPC8610 HPCD board"
-	# I2C is necessary for the CS4270 driver
-	depends on MPC8610_HPCD && I2C
-	select SND_SOC_FSL_SSI
-	select SND_SOC_FSL_UTILS
-	select SND_SOC_POWERPC_DMA
-	select SND_SOC_CS4270
-	select SND_SOC_CS4270_VD33_ERRATA
-	default y if MPC8610_HPCD
-	help
-	  Say Y if you want to enable audio on the Freescale MPC8610 HPCD.
-
 config SND_SOC_P1022_DS
 	tristate "ALSA SoC support for the Freescale P1022 DS board"
 	# I2C is necessary for the WM8776 driver

sound/soc/fsl/Makefile

 # SPDX-License-Identifier: GPL-2.0
-# MPC8610 HPCD Machine Support
-snd-soc-mpc8610-hpcd-objs := mpc8610_hpcd.o
-obj-$(CONFIG_SND_SOC_MPC8610_HPCD) += snd-soc-mpc8610-hpcd.o
-
 # P1022 DS Machine Support
 snd-soc-p1022-ds-objs := p1022_ds.o
 obj-$(CONFIG_SND_SOC_P1022_DS) += snd-soc-p1022-ds.o