board: powerpc: convert makefiles to Kbuild style

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Cc: Stefan Roese <sr@denx.de>
diff --git a/board/gdsys/p1022/Makefile b/board/gdsys/p1022/Makefile
index 17f602f..6e02447 100644
--- a/board/gdsys/p1022/Makefile
+++ b/board/gdsys/p1022/Makefile
@@ -7,31 +7,9 @@
 # any later version.
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	= $(obj)lib$(BOARD).o
-
-# COBJS-y	+= $(BOARD).o
-COBJS-y	+= law.o
-COBJS-y	+= ddr.o
-COBJS-y	+= tlb.o
-COBJS-y	+= sdhc_boot.o
-COBJS-$(CONFIG_CONTROLCENTERD) += controlcenterd.o controlcenterd-id.o
-
-COBJS-$(CONFIG_FSL_DIU_FB) += diu.o
-
-SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS-y))
-SOBJS	:= $(addprefix $(obj),$(SOBJS))
-
-$(LIB):	$(OBJS) $(SOBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-y	+= law.o
+obj-y	+= ddr.o
+obj-y	+= tlb.o
+obj-y	+= sdhc_boot.o
+obj-$(CONFIG_CONTROLCENTERD) += controlcenterd.o controlcenterd-id.o
+obj-$(CONFIG_FSL_DIU_FB) += diu.o