kbuild: unify cmd_copy and cmd_shipped

cmd_copy and cmd_shipped have similar functionality. The difference is
that cmd_copy uses 'cp' while cmd_shipped 'cat'.

Unify them into cmd_copy because this macro name is more intuitive.

Going forward, cmd_copy will use 'cat' to avoid the permission issue.
I also thought of 'cp --no-preserve=mode' but this option is not
mentioned in the POSIX spec [1], so I am keeping the 'cat' command.

[1]: https://pubs.opengroup.org/onlinepubs/009695299/utilities/cp.html
Signed-off-by: Masahiro Yamada <[e-mail]>
Reviewed-by: Nick Desaulniers <[e-mail]>
Reviewed-by: Gabriel Krisman Bertazi <[e-mail]>

arch/microblaze/boot/Makefile

···
 	$(call if_changed,uimage)
 
 $(obj)/simpleImage.$(DTB).unstrip: vmlinux FORCE
-	$(call if_changed,shipped)
+	$(call if_changed,copy)
 
 $(obj)/simpleImage.$(DTB).strip: vmlinux FORCE
 	$(call if_changed,strip)

arch/microblaze/boot/dts/Makefile

···
 # Generate system.dtb from $(DTB).dtb
 ifneq ($(DTB),system)
 $(obj)/system.dtb: $(obj)/$(DTB).dtb
-	$(call if_changed,shipped)
+	$(call if_changed,copy)
 endif
 endif
 

fs/unicode/Makefile

···
 else
 
 $(obj)/utf8data.c: $(src)/utf8data.c_shipped FORCE
-	$(call if_changed,shipped)
+	$(call if_changed,copy)
 
 endif
 

scripts/Makefile.lib

···
 	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 endef
 
-quiet_cmd_copy = COPY    $@
-      cmd_copy = cp $< $@
-
-# Shipped files
+# Copy a file
 # ===========================================================================
 # 'cp' preserves permissions. If you use it to copy a file in read-only srctree,
 # the copy would be read-only as well, leading to an error when executing the
 # rule next time. Use 'cat' instead in order to generate a writable file.
-
-quiet_cmd_shipped = SHIPPED $@
-cmd_shipped = cat $< > $@
+quiet_cmd_copy = COPY    $@
+      cmd_copy = cat $< > $@
 
 $(obj)/%: $(src)/%_shipped
-	$(call cmd,shipped)
+	$(call cmd,copy)
 
 # Commands useful for building a boot image
 # ===========================================================================

usr/Makefile

···
 # kbuild file for usr/ - including initramfs image
 #
 
-compress-y					:= shipped
+compress-y					:= copy
 compress-$(CONFIG_INITRAMFS_COMPRESSION_GZIP)	:= gzip
 compress-$(CONFIG_INITRAMFS_COMPRESSION_BZIP2)	:= bzip2
 compress-$(CONFIG_INITRAMFS_COMPRESSION_LZMA)	:= lzma
···
 # .cpio.*, use it directly as an initramfs, and avoid double compression.
 ifeq ($(words $(subst .cpio.,$(space),$(ramfs-input))),2)
 cpio-data := $(ramfs-input)
-compress-y := shipped
+compress-y := copy
 endif
 
 endif