audio-driver: Update build files for sa6155

Enable conditional build for audio driver modules
specific to sa6155.

Change-Id: I58701a907242afcfe230623ff42b47c001e3d5f4
Signed-off-by: Rahul Sharma <rahsha@codeaurora.org>

dsp/Kbuild

@@ -15,9 +15,15 @@ endif
 
 ifeq ($(KERNEL_BUILD), 0)
 	ifeq ($(CONFIG_ARCH_SM6150), y)
-		include $(AUDIO_ROOT)/config/sm6150auto.conf
-		export
-		INCS    +=  -include $(AUDIO_ROOT)/config/sm6150autoconf.h
+		ifdef CONFIG_SND_SOC_SA6155
+			include $(AUDIO_ROOT)/config/sa6155auto.conf
+			export
+			INCS    +=  -include $(AUDIO_ROOT)/config/sa6155autoconf.h
+		else
+			include $(AUDIO_ROOT)/config/sm6150auto.conf
+			export
+			INCS    +=  -include $(AUDIO_ROOT)/config/sm6150autoconf.h
+		endif
 	endif
 	ifeq ($(CONFIG_ARCH_TRINKET), y)
 		include $(AUDIO_ROOT)/config/sm6150auto.conf