[PATCH] ASoC: fsl: fix fsl_spdif.c build errors

[Randy Dunlap <rdunlap@infradead.org>]

From: Randy Dunlap <rdunlap@infradead.org>

Fix build errors in sound/soc/fsl/fsl_spdif.c by selecting BITREVERSE.
Fixes these build errors:

sound/built-in.o: In function `spdif_write_channel_status':
fsl_spdif.c:(.text+0xbe39d): undefined reference to `byte_rev_table'
fsl_spdif.c:(.text+0xbe3a8): undefined reference to `byte_rev_table'
fsl_spdif.c:(.text+0xbe3be): undefined reference to `byte_rev_table'
fsl_spdif.c:(.text+0xbe3d8): undefined reference to `byte_rev_table'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Applies-to: all 3.x, all 4.x
---
 sound/soc/fsl/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- lnx-49-rc3.orig/sound/soc/fsl/Kconfig
+++ lnx-49-rc3/sound/soc/fsl/Kconfig
@@ -40,6 +40,7 @@ config SND_SOC_FSL_SPDIF
 	select REGMAP_MMIO
 	select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
 	select SND_SOC_IMX_PCM_FIQ if SND_IMX_SOC != n && (MXC_TZIC || MXC_AVIC)
+	select BITREVERSE
 	help
 	  Say Y if you want to add Sony/Philips Digital Interface (SPDIF)
 	  support for the Freescale CPUs.