next: powerpc: gpio_mdio.c:(.text+0x13c): undefined reference to `__of_mdiobus_register'

[Naresh Kamboju]

Following build failures noticed on Linux next-20230419 for powerpc.

Regressions found on powerpc:
 - build/gcc-8-defconfig
 - build/clang-16-defconfig
 - build/gcc-12-defconfig
 - build/clang-nightly-defconfig


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

Build log:
--------
powerpc64le-linux-gnu-ld: arch/powerpc/platforms/pasemi/gpio_mdio.o:
in function `gpio_mdio_probe':
gpio_mdio.c:(.text+0x13c): undefined reference to `__of_mdiobus_register'
powerpc64le-linux-gnu-ld: drivers/net/phy/phy_device.o: in function `phy_probe':
phy_device.c:(.text+0x56ac): undefined reference to
`devm_led_classdev_register_ext'
powerpc64le-linux-gnu-ld: drivers/net/ethernet/pasemi/pasemi_mac.o: in
function `pasemi_mac_open':
pasemi_mac.c:(.text+0x19ac): undefined reference to `of_phy_connect'
make[2]: *** [scripts/Makefile.vmlinux:35: vmlinux] Error 1

Build details:
---------
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230419/testrun/16369015/suite/build/test/gcc-12-defconfig/details/
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230419/testrun/16369015/suite/build/test/gcc-12-defconfig/log


Steps to reproduce:
------------
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake
#
# See https://docs.tuxmake.org/ for complete documentation.
# Original tuxmake command with fragments listed below.

tuxmake --runtime podman --target-arch powerpc --toolchain gcc-12
--kconfig defconfig


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