ASoC: atmel: Use *-y instead of *-objs in Makefile

*-objs suffix is reserved rather for (user-space) host programs while
usually *-y suffix is used for kernel drivers (although *-objs works
for that purpose for now).

Let's correct the old usages of *-objs in Makefiles.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240507155540.24815-7-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # AT91 Platform Support
-snd-soc-atmel-pcm-pdc-objs := atmel-pcm-pdc.o
-snd-soc-atmel-pcm-dma-objs := atmel-pcm-dma.o
-snd-soc-atmel_ssc_dai-objs := atmel_ssc_dai.o
-snd-soc-atmel-i2s-objs := atmel-i2s.o
-snd-soc-mchp-i2s-mcc-objs := mchp-i2s-mcc.o
-snd-soc-mchp-spdiftx-objs := mchp-spdiftx.o
-snd-soc-mchp-spdifrx-objs := mchp-spdifrx.o
-snd-soc-mchp-pdmc-objs := mchp-pdmc.o
+snd-soc-atmel-pcm-pdc-y := atmel-pcm-pdc.o
+snd-soc-atmel-pcm-dma-y := atmel-pcm-dma.o
+snd-soc-atmel_ssc_dai-y := atmel_ssc_dai.o
+snd-soc-atmel-i2s-y := atmel-i2s.o
+snd-soc-mchp-i2s-mcc-y := mchp-i2s-mcc.o
+snd-soc-mchp-spdiftx-y := mchp-spdiftx.o
+snd-soc-mchp-spdifrx-y := mchp-spdifrx.o
+snd-soc-mchp-pdmc-y := mchp-pdmc.o
 
 # pdc and dma need to both be built-in if any user of
 # ssc is built-in.
@@ -25,13 +25,13 @@ obj-$(CONFIG_SND_MCHP_SOC_SPDIFRX) += snd-soc-mchp-spdifrx.o
 obj-$(CONFIG_SND_MCHP_SOC_PDMC) += snd-soc-mchp-pdmc.o
 
 # AT91 Machine Support
-snd-soc-sam9g20-wm8731-objs := sam9g20_wm8731.o
-snd-atmel-soc-wm8904-objs := atmel_wm8904.o
-snd-soc-sam9x5-wm8731-objs := sam9x5_wm8731.o
-snd-atmel-soc-classd-objs := atmel-classd.o
-snd-atmel-soc-pdmic-objs := atmel-pdmic.o
-snd-atmel-soc-tse850-pcm5142-objs := tse850-pcm5142.o
-snd-soc-mikroe-proto-objs := mikroe-proto.o
+snd-soc-sam9g20-wm8731-y := sam9g20_wm8731.o
+snd-atmel-soc-wm8904-y := atmel_wm8904.o
+snd-soc-sam9x5-wm8731-y := sam9x5_wm8731.o
+snd-atmel-soc-classd-y := atmel-classd.o
+snd-atmel-soc-pdmic-y := atmel-pdmic.o
+snd-atmel-soc-tse850-pcm5142-y := tse850-pcm5142.o
+snd-soc-mikroe-proto-y := mikroe-proto.o
 
 obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o
 obj-$(CONFIG_SND_ATMEL_SOC_WM8904) += snd-atmel-soc-wm8904.o