ASoC: config: Enable sdm450 external codec audio

Enable compilation for sdm450 audio drivers
for external codec support.

CRs-Fixed: 2165343
Change-Id: If084e19bd4ca39e1776831dda0a87cef4800997a
Signed-off-by: Soumya Managoli <smanag@codeaurora.org>
diff --git a/asoc/Kbuild b/asoc/Kbuild
index 4f0fc09..aba7ceb 100644
--- a/asoc/Kbuild
+++ b/asoc/Kbuild
@@ -90,11 +90,17 @@
 	MACHINE_OBJS += sdxpoorwills.o
 endif
 
-# for SDM450 sound card driver
+# for SDM450 internal codec sound card driver
 ifdef CONFIG_SND_SOC_SDM450
 	MACHINE_OBJS += msm8952.o
 endif
 
+# for SDM450 external codec sound card driver
+ifdef CONFIG_SND_SOC_EXT_CODEC_SDM450
+	MACHINE_EXT_OBJS += msm8952-slimbus.o
+	MACHINE_EXT_OBJS += msm8952-dai-links.o
+endif
+
 ifdef CONFIG_SND_SOC_CPE
 	CPE_LSM_OBJS += msm-cpe-lsm.o
 endif
@@ -183,6 +189,9 @@
 obj-$(CONFIG_SND_SOC_SDM450) += machine_dlkm.o
 machine_dlkm-y := $(MACHINE_OBJS)
 
+obj-$(CONFIG_SND_SOC_EXT_CODEC_SDM450) += machine_ext_dlkm.o
+machine_ext_dlkm-y := $(MACHINE_EXT_OBJS)
+
 obj-$(CONFIG_SND_SOC_MACHINE_SDM845) += machine_dlkm.o
 machine_dlkm-y := $(MACHINE_OBJS)