PPC32: Fix dependancies in arch/ppc/boot.

After talking with Kai Germaschewski, add EXTRA_TARGETS := (...objs...)
so that we can use the generated dependancies.

arch/ppc/boot/chrp/Makefile

@@ -11,7 +11,11 @@ LD_ARGS = -T ../ld.script -Ttext 0x00400000
 
 OBJS = ../common/crt0.o start.o main.o misc.o ../common/string.o image.o \
 	../common/ofcommon.o
+
+EXTRA_TARGETS	:= $(OBJS)
 LIBS = $(TOPDIR)/lib/lib.a ../lib/zlib.a
+
+# Utils
 ADDNOTE = ../utils/addnote
 PIGGYBACK = ../utils/piggyback
 

arch/ppc/boot/pmac/Makefile

@@ -15,6 +15,8 @@ CHRP_LD_ARGS = -T ../ld.script -Ttext 0x01000000
 COMMONOBJS = start.o misc.o ../common/string.o ../common/ofcommon.o
 COFFOBJS = ../common/coffcrt0.o $(COMMONOBJS) coffmain.o
 CHRPOBJS = ../common/crt0.o $(COMMONOBJS) chrpmain.o
+
+EXTRA_TARGETS	:= $(COFFOBJS) $(CHRPOBJS)
 LIBS = $(TOPDIR)/lib/lib.a ../lib/zlib.a
 
 MKNOTE := ../utils/mknote

arch/ppc/boot/prep/Makefile

@@ -30,6 +30,8 @@ LIBS 				= ../lib/zlib.a
 boot-$(CONFIG_SERIAL_CONSOLE)	+= ../common/ns16550.o
 boot-$(CONFIG_VGA_CONSOLE)	+= vreset.o kbd.o
 
+EXTRA_TARGETS			:= $(boot-y)
+
 # Tools
 MKPREP				:= ../utils/mkprep
 SIZE				:= ../utils/size

arch/ppc/boot/simple/Makefile

@@ -140,6 +140,7 @@ boot-$(CONFIG_GT64260_CONSOLE)   += gt64260_tty.o
 boot-$(CONFIG_SERIAL)		+= ../common/ns16550.o
 endif
 
+EXTRA_TARGETS			:= $(boot-y)
 LIBS				:= ../lib/zlib.a
 
 # Tools