[mst-vhost:vhost 28/60] nios2-linux-ld: virtio_crypto_akcipher_algs.c:undefined reference to `rsa_parse_pub_key'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
head:   c5f633abfd09491ae7ecbc7fcfca08332ad00a8b
commit: 8a75f36b5d7a48f1c5a0b46638961c951ec6ecd9 [28/60] virtio-crypto: implement RSA algorithm
config: nios2-randconfig-p002-20220308 (https://download.01.org/0day-ci/archive/20220309/202203090014.ulENdnAQ-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?id=8a75f36b5d7a48f1c5a0b46638961c951ec6ecd9
        git remote add mst-vhost https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git
        git fetch --no-tags mst-vhost vhost
        git checkout 8a75f36b5d7a48f1c5a0b46638961c951ec6ecd9
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   nios2-linux-ld: drivers/crypto/virtio/virtio_crypto_akcipher_algs.o: in function `virtio_crypto_rsa_set_key':
   virtio_crypto_akcipher_algs.c:(.text+0x4bc): undefined reference to `rsa_parse_priv_key'
   virtio_crypto_akcipher_algs.c:(.text+0x4bc): relocation truncated to fit: R_NIOS2_CALL26 against `rsa_parse_priv_key'
>> nios2-linux-ld: virtio_crypto_akcipher_algs.c:(.text+0x4e8): undefined reference to `rsa_parse_pub_key'
   virtio_crypto_akcipher_algs.c:(.text+0x4e8): relocation truncated to fit: R_NIOS2_CALL26 against `rsa_parse_pub_key'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org