kbuild: rename multi-used-* to multi-obj-*

I think multi-obj-* is clearer, and more consistent with real-obj-*.

Rename as follows:

  multi-used-y  ->  multi-obj-y
  multi-used-m  ->  multi-obj-m
  multi-used    ->  multi-obj-ym
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/Makefile.build

@@ -445,11 +445,11 @@ quiet_cmd_link_multi-m = LD [M]  $@
       cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^)
 endif
 
-$(multi-used-m): FORCE
+$(multi-obj-m): FORCE
 	$(call if_changed,link_multi-m)
-$(call multi_depend, $(multi-used-m), .o, -objs -y -m)
+$(call multi_depend, $(multi-obj-m), .o, -objs -y -m)
 
-targets += $(multi-used-m)
+targets += $(multi-obj-m)
 targets := $(filter-out $(PHONY), $(targets))
 
 # Add intermediate targets:

scripts/Makefile.lib

@@ -48,9 +48,9 @@ endif
 suffix-search = $(foreach s,$(2),$($(1:.o=$s)))
 # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
 multi-search = $(sort $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)), $(m))))
-multi-used-y := $(call multi-search,$(obj-y),-objs -y)
-multi-used-m := $(call multi-search,$(obj-m),-objs -y -m)
-multi-used   := $(multi-used-y) $(multi-used-m)
+multi-obj-y := $(call multi-search,$(obj-y),-objs -y)
+multi-obj-m := $(call multi-search,$(obj-m),-objs -y -m)
+multi-obj-ym := $(multi-obj-y) $(multi-obj-m)
 
 # Replace multi-part objects by their individual parts,
 # including built-in.a from subdirectories
@@ -92,12 +92,12 @@ obj-m		:= $(addprefix $(obj)/,$(obj-m))
 lib-y		:= $(addprefix $(obj)/,$(lib-y))
 real-obj-y	:= $(addprefix $(obj)/,$(real-obj-y))
 real-obj-m	:= $(addprefix $(obj)/,$(real-obj-m))
-multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
+multi-obj-m	:= $(addprefix $(obj)/, $(multi-obj-m))
 subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
 
 # Finds the multi-part object the current object will be linked into.
 # If the object belongs to two or more multi-part objects, list them all.
-modname-multi = $(sort $(foreach m,$(multi-used),\
+modname-multi = $(sort $(foreach m,$(multi-obj-ym),\
 		$(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))
 
 __modname = $(if $(modname-multi),$(modname-multi),$(basetarget))