arm: shmobile_defconfig: ld.lld: error: undefined symbol: lynx_pcs_destroy

[Naresh Kamboju]

Following build regressions found while building arm shmobile_defconfig on
Linux next-20230606.

Regressions found on arm:

 - build/clang-16-shmobile_defconfig
 - build/gcc-8-shmobile_defconfig
 - build/gcc-12-shmobile_defconfig
 - build/clang-nightly-shmobile_defconfig


ld.lld: error: undefined symbol: lynx_pcs_destroy
>>> referenced by stmmac_mdio.c
>>>               drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.o:(stmmac_mdio_unregister) in archive vmlinux.a
make[2]: *** [scripts/Makefile.vmlinux:35: vmlinux] Error 1


Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

links,
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230606/testrun/17347517/suite/build/test/gcc-12-shmobile_defconfig/history/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230606/testrun/17347562/suite/build/test/clang-16-shmobile_defconfig/log

--
Linaro LKFT
https://lkft.linaro.org