[PATCH 3/9] vdso: Add __arch_get_k_vdso_rng_data()

[kernel test robot]

Hi Christophe,

kernel test robot noticed the following build errors:

[auto build test ERROR on powerpc/next]
[also build test ERROR on powerpc/fixes crng-random/master shuah-kselftest/next shuah-kselftest/fixes linus/master v6.11-rc3 next-20240816]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Christophe-Leroy/powerpc-vdso-Don-t-discard-rela-sections/20240816-223917
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
patch link:    https://lore.kernel.org/r/a7bdbbb14d8635c1e33ada7982cf2cd1a8321e5c.1723817900.git.christophe.leroy%40csgroup.eu
patch subject: [PATCH 3/9] vdso: Add __arch_get_k_vdso_rng_data()
config: x86_64-randconfig-003-20240817 (https://download.01.org/0day-ci/archive/20240817/202408172056.OAokF1z5-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240817/202408172056.OAokF1z5-lkp@intel.com/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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408172056.OAokF1z5-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld: drivers/char/random.o:arch/x86/include/asm/vdso/vsyscall.h:13: multiple definition of `_vdso_rng_data'; kernel/time/vsyscall.o:arch/x86/include/asm/vdso/vsyscall.h:13: first defined here
>> ld: drivers/char/random.o:arch/x86/include/asm/vdso/vsyscall.h:12: multiple definition of `_vdso_data'; kernel/time/vsyscall.o:arch/x86/include/asm/vdso/vsyscall.h:12: first defined here

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