ALSA: aoa: 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>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20240507135513.14919-9-tiwai@suse.de

sound/aoa/codecs/Makefile

 # SPDX-License-Identifier: GPL-2.0
-snd-aoa-codec-onyx-objs := onyx.o
-snd-aoa-codec-tas-objs := tas.o
-snd-aoa-codec-toonie-objs := toonie.o
+snd-aoa-codec-onyx-y := onyx.o
+snd-aoa-codec-tas-y := tas.o
+snd-aoa-codec-toonie-y := toonie.o
 
 obj-$(CONFIG_SND_AOA_ONYX) += snd-aoa-codec-onyx.o
 obj-$(CONFIG_SND_AOA_TAS) += snd-aoa-codec-tas.o

sound/aoa/core/Makefile

 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_SND_AOA) += snd-aoa.o
-snd-aoa-objs := core.o \
+snd-aoa-y := core.o \
 		alsa.o \
 		gpio-pmf.o \
 		gpio-feature.o

sound/aoa/fabrics/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
-snd-aoa-fabric-layout-objs += layout.o
+snd-aoa-fabric-layout-y += layout.o
 
 obj-$(CONFIG_SND_AOA_FABRIC_LAYOUT) += snd-aoa-fabric-layout.o

sound/aoa/soundbus/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_SND_AOA_SOUNDBUS) += snd-aoa-soundbus.o
-snd-aoa-soundbus-objs := core.o sysfs.o
+snd-aoa-soundbus-y := core.o sysfs.o
 obj-$(CONFIG_SND_AOA_SOUNDBUS_I2S) += i2sbus/

sound/aoa/soundbus/i2sbus/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_SND_AOA_SOUNDBUS_I2S) += snd-aoa-i2sbus.o
-snd-aoa-i2sbus-objs := core.o pcm.o control.o
+snd-aoa-i2sbus-y := core.o pcm.o control.o