ASoC: au1x: Use *-y instead of *-objs 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/20240507155540.24815-8-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/au1x/Makefile

 # SPDX-License-Identifier: GPL-2.0
 # Au1200/Au1550 PSC audio
-snd-soc-au1xpsc-dbdma-objs := dbdma2.o
-snd-soc-au1xpsc-i2s-objs := psc-i2s.o
-snd-soc-au1xpsc-ac97-objs := psc-ac97.o
+snd-soc-au1xpsc-dbdma-y := dbdma2.o
+snd-soc-au1xpsc-i2s-y := psc-i2s.o
+snd-soc-au1xpsc-ac97-y := psc-ac97.o
 
 # Au1000/1500/1100 Audio units
-snd-soc-au1x-dma-objs := dma.o
-snd-soc-au1x-ac97c-objs := ac97c.o
-snd-soc-au1x-i2sc-objs := i2sc.o
+snd-soc-au1x-dma-y := dma.o
+snd-soc-au1x-ac97c-y := ac97c.o
+snd-soc-au1x-i2sc-y := i2sc.o
 
 obj-$(CONFIG_SND_SOC_AU1XPSC) += snd-soc-au1xpsc-dbdma.o
 obj-$(CONFIG_SND_SOC_AU1XPSC_I2S) += snd-soc-au1xpsc-i2s.o
@@ -17,8 +17,8 @@ obj-$(CONFIG_SND_SOC_AU1XAC97C) += snd-soc-au1x-ac97c.o
 obj-$(CONFIG_SND_SOC_AU1XI2SC) += snd-soc-au1x-i2sc.o
 
 # Boards
-snd-soc-db1000-objs := db1000.o
-snd-soc-db1200-objs := db1200.o
+snd-soc-db1000-y := db1000.o
+snd-soc-db1200-y := db1200.o
 
 obj-$(CONFIG_SND_SOC_DB1000) += snd-soc-db1000.o
 obj-$(CONFIG_SND_SOC_DB1200) += snd-soc-db1200.o