sparc: unify sparc32/sparc64 archhelp

Currently, entering
$ make ARCH=sparc32 help
prints the archhelp text for sparc64.
["sparc32" is documented (Documentation/kbuild/kbuild.rst)
to be a recognized alias for 32-bit sparc.]

Instead of handling ARCH=sparc or ARCH=sparc32 or ARCH=sparc64,
just unify all SPARC archhelp text in one place.

Fixes: 5e538790 ("sparc,sparc64: unify Makefile")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

arch/sparc/Makefile

@@ -83,18 +83,11 @@ vdso_install:
 KBUILD_IMAGE := $(boot)/zImage
 
 # Don't use tabs in echo arguments.
-ifeq ($(ARCH),sparc)
 define archhelp
-  echo  '* image        - kernel image ($(boot)/image)'
-  echo  '* zImage       - stripped kernel image ($(boot)/zImage)'
+  echo  '* vmlinux      - standard SPARC kernel'
+  echo  '  image        - kernel image ($(boot)/image)'
+  echo  '* zImage       - stripped/compressed kernel image ($(boot)/zImage)'
   echo  '  uImage       - U-Boot SPARC32 Image (only for LEON)'
+  echo  '  vmlinux.aout - a.out kernel for SPARC64'
   echo  '  tftpboot.img - image prepared for tftp'
 endef
-else
-define archhelp
-  echo  '* vmlinux      - standard sparc64 kernel'
-  echo  '* zImage       - stripped and compressed sparc64 kernel ($(boot)/zImage)'
-  echo  '  vmlinux.aout - a.out kernel for sparc64'
-  echo  '  tftpboot.img - image prepared for tftp'
-endef
-endif