cc1: error: AltiVec not supported in this target

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   633b47cb009d09dc8f4ba9cdb3a0ca138809c7c7
commit: ebd1d3b74f8542a8f3bb80b453692d6d18f84071 powerpc/32: Move the old 6xx -mcpu logic before the TARGET_CPU logic
date:   4 years, 9 months ago
config: powerpc-randconfig-r035-20230908 (https://download.01.org/0day-ci/archive/20230929/202309290441.KPUf5M1o-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230929/202309290441.KPUf5M1o-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309290441.KPUf5M1o-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> cc1: error: AltiVec not supported in this target

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