asoc: codecs: fix compilation error for wcd codec

The previous commit fb24ad8485a assigns obj-y with
msm_hdmi_codec_rx.o instead of appending, thus giving
compilation error as previously assigned object files
are removed.
Fix by appending obj-y with msm_hdmi_codec_rx.o instead
of assigning.

Change-Id: I7c5ea5627e2e1888e3fc0b53a6650ab64b9a29a8
Signed-off-by: Shiv Maliyappanahalli <[email protected]>

asoc/codecs/Makefile

@@ -42,4 +42,4 @@ wcd-core-objs                  := wcd9xxx-rst.o wcd9xxx-core-init.o \
 				wcd9335-regmap.o wcd9335-tables.o \
 				msm-cdc-pinctrl.o msm-cdc-supply.o
 obj-$(CONFIG_WCD9XXX_CODEC_CORE) += wcd-core.o
-obj-$(CONFIG_SND_SOC_MSM_HDMI_CODEC_RX) := msm_hdmi_codec_rx.o
+obj-$(CONFIG_SND_SOC_MSM_HDMI_CODEC_RX) += msm_hdmi_codec_rx.o