compile quirk linux-2.6.24 (with workaround)

Dear linux powerpc Maintainers and Users,

recently I have tried to compile a new kernel on a Debian sarge ppc
system (PowerBook5,6 MacRISC3 Power Macintosh).

The build system bailed out with
       BOOTCC  arch/powerpc/boot/4xx.o
        cc1: error: bad value (440) for -mcpu= switch
        make[1]: *** [arch/powerpc/boot/4xx.o] Fehler 1

I have tracked this a few steps and the attached patch made the compile for me
as my compiler gcc-Version 3.3.5 (Debian 1:3.3.5-13) 
cannot produce code for 4xx it seems.

The "ARCH=ppc64" I have came about also looked wrong, but I do not know
if this part of the patch is really necessary.
It is just a workaround, as I have no insight of what is really going wrong.

I hope my report is useful,
Bernhard

Details:
I have used "make oldconfig" with a 2.6.17 kernel and answered some questions.
Here is the first section of the .config I've ended up with:


# CONFIG_PPC64 is not set

#
# Processor support
#
CONFIG_6xx=y
# CONFIG_PPC_85xx is not set
# CONFIG_PPC_8xx is not set
# CONFIG_40x is not set
# CONFIG_44x is not set
# CONFIG_E200 is not set
CONFIG_PPC_FPU=y
CONFIG_ALTIVEC=y
CONFIG_PPC_STD_MMU=y
CONFIG_PPC_STD_MMU_32=y
# CONFIG_PPC_MM_SLICES is not set
# CONFIG_SMP is not set
CONFIG_PPC32=y
CONFIG_WORD_SIZE=32
CONFIG_PPC_MERGE=y
CONFIG_MMU=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_IRQ_PER_CPU=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_ILOG2_U32=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
CONFIG_PPC=y
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_NVRAM=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_PPC_OF=y
CONFIG_OF=y
CONFIG_PPC_UDBG_16550=y
# CONFIG_GENERIC_TBSYNC is not set
CONFIG_AUDIT_ARCH=y
CONFIG_GENERIC_BUG=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
# CONFIG_DEFAULT_UIMAGE is not set
# CONFIG_PPC_DCR_NATIVE is not set
# CONFIG_PPC_DCR_MMIO is not set
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"




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