[MIPS] Fix archhelp.

Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/Makefile

···
 archclean:
 	@$(MAKE) $(clean)=arch/mips/boot
 
+define archhelp
+	echo '  vmlinux.ecoff        - ECOFF boot image'
+	echo '  vmlinux.bin          - Raw binary boot image'
+	echo '  vmlinux.srec         - SREC boot image'
+	echo
+	echo '  These will be default as apropriate for a configured platform.'
+endef
+
 CLEAN_FILES += vmlinux.32 \
 	       vmlinux.64 \
 	       vmlinux.ecoff

arch/mips/boot/Makefile

···
 $(obj)/addinitrd: $(obj)/addinitrd.c
 	$(HOSTCC) -o $@ $^
 
-archhelp:
-	@echo	'* vmlinux.ecoff	- ECOFF boot image'
-	@echo	'* vmlinux.srec		- SREC boot image'
-
 clean-files += addinitrd \
 	       elf2ecoff \
 	       vmlinux.bin \