ppc4xx: Fix bogus Canyonlands config.mk

This patch fixes the canyonlands config.mk file to enable correct
out-of-tree builds. Thanks to Wolfgang Denk for spotting this.
Signed-off-by: NStefan Roese <sr@denx.de>

board/amcc/canyonlands/config.mk

@@ -24,20 +24,12 @@
 # AMCC 460EX/460GT Evaluation Board (Canyonlands) board
 #
 
-sinclude $(TOPDIR)/board/$(BOARDDIR)/config.tmp
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
 
 ifndef TEXT_BASE
 TEXT_BASE = 0xFFFA0000
 endif
 
-ifeq ($(CONFIG_NAND_U_BOOT),y)
-LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-endif
-
-ifeq ($(CONFIG_PCIBOOT_U_BOOT),y)
-LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-endif
-
 PLATFORM_CPPFLAGS += -DCONFIG_440=1
 
 ifeq ($(debug),1)