ppc4xx: Add Glacier NAND booting target

Signed-off-by: Stefan Roese <sr@denx.de>

Makefile

@@ -1187,10 +1187,13 @@ glacier_config:	unconfig
 		tr '[:lower:]' '[:upper:]')" >$(obj)include/config.h
 	@$(MKCONFIG) -n $@ -a canyonlands ppc ppc4xx canyonlands amcc
 
-canyonlands_nand_config:	unconfig
+canyonlands_nand_config \
+glacier_nand_config:	unconfig
 	@mkdir -p $(obj)include $(obj)board/amcc/canyonlands
 	@mkdir -p $(obj)nand_spl/board/amcc/canyonlands
 	@echo "#define CONFIG_NAND_U_BOOT" > $(obj)include/config.h
+	@echo "#define CONFIG_$$(echo $(subst ,,$(@:_nand_config=)) | \
+		tr '[:lower:]' '[:upper:]')" >> $(obj)include/config.h
 	@$(MKCONFIG) -n $@ -a canyonlands ppc ppc4xx canyonlands amcc
 	@echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/canyonlands/config.tmp
 	@echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk