undefined reference to `drm_connector_hdmi_audio_plugged_notify'

undefined reference to `drm_connector_hdmi_audio_plugged_notify'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   11439c4635edd669ae435eec308f4ab8a0804808
commit: c08c123d4cd6ec3ee482d607e29388d0db2d3f1d drm/bridge: lontium-lt9611uxc: switch to HDMI audio helpers
date:   10 weeks ago
config: parisc-randconfig-r053-20260302 (https://download.01.org/0day-ci/archive/20260302/202603022229.VyYP9sfI-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260302/202603022229.VyYP9sfI-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603022229.VyYP9sfI-lkp@intel.com/

All errors (new ones prefixed by >>):

   hppa-linux-ld: drivers/gpu/drm/bridge/lontium-lt9611uxc.o: in function `lt9611uxc_bridge_hpd_notify':
>> (.text+0x50c): undefined reference to `drm_connector_hdmi_audio_plugged_notify'
>> hppa-linux-ld: (.text+0x560): undefined reference to `drm_connector_hdmi_audio_plugged_notify'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for CAN_DEV
   Depends on [n]: NETDEVICES [=n] && CAN [=y]
   Selected by [y]:
   - CAN [=y] && NET [=y]

-- 
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https://github.com/intel/lkp-tests/wiki