ASoC: amd: enable build for RN machine driver

This patch enables build for RN machine driver.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200518171704.24999-15-Vijendar.Mukunda@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/Kconfig

@@ -42,3 +42,10 @@ config SND_SOC_AMD_RENOIR
 	depends on X86 && PCI
 	help
 	 This option enables ACP support for Renoir platform
+
+config SND_SOC_AMD_RENOIR_MACH
+	tristate "AMD Renoir support for DMIC"
+	select SND_SOC_DMIC
+	depends on SND_SOC_AMD_RENOIR
+	help
+	 This option enables machine driver for DMIC

sound/soc/amd/renoir/Makefile

@@ -4,3 +4,4 @@ snd-rn-pci-acp3x-objs	:= rn-pci-acp3x.o
 snd-acp3x-pdm-dma-objs	:= acp3x-pdm-dma.o
 obj-$(CONFIG_SND_SOC_AMD_RENOIR)	 += snd-rn-pci-acp3x.o
 obj-$(CONFIG_SND_SOC_AMD_RENOIR)	 += snd-acp3x-pdm-dma.o
+obj-$(CONFIG_SND_SOC_AMD_RENOIR_MACH)	+= acp3x-rn.o