asoc: clean up audio drivers and remove unused files

Clean up audio drivers and remove unused files.

Change-Id: I50559ac3c5f4a1f4336e4480cd3ff235d015441e
Signed-off-by: Meng Wang <mengw@codeaurora.org>

ipc/Android.mk

@@ -3,14 +3,6 @@
 # Assume no targets will be supported
 
 # Check if this driver needs be built for current target
-ifeq ($(call is-board-platform,sdm845),true)
-AUDIO_SELECT  := CONFIG_SND_SOC_SDM845=m
-endif
-
-ifeq ($(call is-board-platform-in-list,msm8953 sdm670 qcs605),true)
-AUDIO_SELECT  := CONFIG_SND_SOC_SDM670=m
-endif
-
 ifeq ($(call is-board-platform,msmnile),true)
 AUDIO_SELECT  := CONFIG_SND_SOC_SM8150=m
 endif
@@ -21,7 +13,7 @@ endif
 
 AUDIO_CHIPSET := audio
 # Build/Package only in case of supported target
-ifeq ($(call is-board-platform-in-list,msm8953 sdm845 sdm670 qcs605 msmnile $(MSMSTEPPE) $(TRINKET)),true)
+ifeq ($(call is-board-platform-in-list,msmnile $(MSMSTEPPE) $(TRINKET)),true)
 
 LOCAL_PATH := $(call my-dir)
 

ipc/Kbuild

@@ -15,21 +15,6 @@ ifeq ($(KERNEL_BUILD), 1)
 endif
 
 ifeq ($(KERNEL_BUILD), 0)
-	ifeq ($(CONFIG_ARCH_SDM845), y)
-		include $(AUDIO_ROOT)/config/sdm845auto.conf
-		export
-		INCS    +=  -include $(AUDIO_ROOT)/config/sdm845autoconf.h
-	endif
-	ifeq ($(CONFIG_ARCH_SDM670), y)
-		include $(AUDIO_ROOT)/config/sdm670auto.conf
-		export
-		INCS    +=  -include $(AUDIO_ROOT)/config/sdm670autoconf.h
-	endif
-	ifeq ($(CONFIG_ARCH_SDM450), y)
-		include $(AUDIO_ROOT)/config/sdm670auto.conf
-		export
-		INCS    +=  -include $(AUDIO_ROOT)/config/sdm670autoconf.h
-	endif
         ifeq ($(CONFIG_ARCH_SM6150), y)
                 include $(AUDIO_ROOT)/config/sm6150auto.conf
                 export