drivers: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile
index c50dd15..6d25292 100644
--- a/drivers/sound/Makefile
+++ b/drivers/sound/Makefile
@@ -5,29 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
-include $(TOPDIR)/config.mk
-
-LIB := $(obj)libsound.o
-
-COBJS-$(CONFIG_SOUND) += sound.o
-COBJS-$(CONFIG_I2S) += samsung-i2s.o
-COBJS-$(CONFIG_SOUND_WM8994) += wm8994.o
-COBJS-$(CONFIG_SOUND_MAX98095) += max98095.o
-
-COBJS := $(COBJS-y)
-SRCS := $(COBJS:.o=.c)
-OBJS := $(addprefix $(obj),$(COBJS))
-
-all: $(LIB)
-
-$(LIB): $(obj).depend $(OBJS)
- $(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#
+obj-$(CONFIG_SOUND) += sound.o
+obj-$(CONFIG_I2S) += samsung-i2s.o
+obj-$(CONFIG_SOUND_WM8994) += wm8994.o
+obj-$(CONFIG_SOUND_MAX98095) += max98095.o