ASoc: Intel: rename sst-mfld-platform.c

to sst-mfld-platform-pcm.c so that we can split pcm and compress to different
files for upcoming changes to support more platforms

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/intel/Makefile

@@ -2,7 +2,7 @@
 snd-soc-sst-dsp-objs := sst-dsp.o sst-firmware.o
 snd-soc-sst-acpi-objs := sst-acpi.o
 
-snd-soc-sst-mfld-platform-objs := sst-mfld-platform.o
+snd-soc-sst-mfld-platform-objs := sst-mfld-platform-pcm.o
 snd-soc-mfld-machine-objs := mfld_machine.o
 
 obj-$(CONFIG_SND_SST_MFLD_PLATFORM) += snd-soc-sst-mfld-platform.o