ASoC: fsl: add PPC_MPC52xx dependency to SND_POWERPC_SOC

mpc52xx socs do not define FSL_SOC but need SND_POWERPC_SOC defined to build
ASoC drivers.
Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/fsl/Kconfig

@@ -6,7 +6,7 @@ config SND_SOC_FSL_UTILS
 
 menuconfig SND_POWERPC_SOC
 	tristate "SoC Audio for Freescale PowerPC CPUs"
-	depends on FSL_SOC
+	depends on FSL_SOC || PPC_MPC52xx
 	help
 	  Say Y or M if you want to add support for codecs attached to
 	  the PowerPC CPUs.