ppc4xx: Rework 4xx cache support

New cache handling functions added and all existing functions
moved from start.S into seperate cache.S.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/Makefile b/cpu/ppc4xx/Makefile
index 1947249..9155e9a 100644
--- a/cpu/ppc4xx/Makefile
+++ b/cpu/ppc4xx/Makefile
@@ -25,14 +25,38 @@
 
 LIB	= $(obj)lib$(CPU).a
 
-START	= start.o resetvec.o kgdb.o
-SOBJS	= dcr.o
-COBJS	= 40x_spd_sdram.o 44x_spd_ddr.o 44x_spd_ddr2.o \
-	  4xx_enet.o 4xx_pci.o 4xx_pcie.o 4xx_uart.o \
-	  bedbug_405.o commproc.o cpu.o cpu_init.o \
-	  fdt.o gpio.o i2c.o interrupts.o iop480_uart.o \
-	  miiphy.o ndfc.o sdram.o speed.o \
-	  tlb.o traps.o usb.o usb_ohci.o usbdev.o
+START	:= resetvec.o
+START	+= start.o
+
+SOBJS	:= cache.o
+SOBJS	+= dcr.o
+SOBJS	+= kgdb.o
+
+COBJS	:= 40x_spd_sdram.o
+COBJS	+= 44x_spd_ddr.o
+COBJS	+= 44x_spd_ddr2.o
+COBJS	+= 4xx_enet.o
+COBJS	+= 4xx_pci.o
+COBJS	+= 4xx_pcie.o
+COBJS	+= 4xx_uart.o
+COBJS	+= bedbug_405.o
+COBJS	+= commproc.o
+COBJS	+= cpu.o
+COBJS	+= cpu_init.o
+COBJS	+= fdt.o
+COBJS	+= gpio.o
+COBJS	+= i2c.o
+COBJS	+= interrupts.o
+COBJS	+= iop480_uart.o
+COBJS	+= miiphy.o
+COBJS	+= ndfc.o
+COBJS	+= sdram.o
+COBJS	+= speed.o
+COBJS	+= tlb.o
+COBJS	+= traps.o
+COBJS	+= usb.o
+COBJS	+= usb_ohci.o
+COBJS	+= usbdev.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))