Currently, the install target in arch/powerpc/Makefile descends into
arch/powerpc/boot/Makefile to invoke the shell script, but there is no
good reason to do so.
arch/powerpc/Makefile can run the shell script directly.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210729141937.445051-3-masahiroy@kernel.org
 
 
 PHONY += install
 install:
-       $(Q)$(MAKE) $(build)=$(boot) install
+       sh -x $(srctree)/$(boot)/install.sh "$(KERNELRELEASE)" vmlinux \
+       System.map "$(INSTALL_PATH)"
 
 archclean:
        $(Q)$(MAKE) $(clean)=$(boot)
 
 $(obj)/zImage.initrd:  $(addprefix $(obj)/, $(initrd-y))
        $(Q)rm -f $@; ln $< $@
 
-# Only install the vmlinux
-install:
-       sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)"
-
-PHONY += install
-
 # anything not in $(targets)
 clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
        zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \