fs: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/fs/sandbox/Makefile b/fs/sandbox/Makefile
index df2fc32..faa7c16 100644
--- a/fs/sandbox/Makefile
+++ b/fs/sandbox/Makefile
@@ -10,25 +10,4 @@
# SPDX-License-Identifier: GPL-2.0+
#
-include $(TOPDIR)/config.mk
-
-LIB = $(obj)libsandboxfs.o
-
-COBJS-$(CONFIG_SANDBOX) := sandboxfs.o
-
-SRCS := $(COBJS-y:.o=.c)
-OBJS := $(addprefix $(obj),$(AOBJS) $(COBJS-y))
-
-all: $(LIB) $(AOBJS)
-
-$(LIB): $(obj).depend $(OBJS)
- $(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-$(CONFIG_SANDBOX) := sandboxfs.o