[radeon-alex:vega20_psp_smu 12/44] drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c:191:33: sparse: symbol 'nbio_v7_4_hdp_flush_reg' was not declared. Should it be static?

[kbuild test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git vega20_psp_smu
head:   9b9ef18df4349dd2d2b8941e76c032ed8acf2529
commit: 24048ee665f3c9367dfa4978f3cd9b4e428fe2e5 [12/44] drm/amdgpu: Add nbio 7.4 support for vega20 (v2)
reproduce:
        # apt-get install sparse
        git checkout 24048ee665f3c9367dfa4978f3cd9b4e428fe2e5
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c:191:33: sparse: symbol 'nbio_v7_4_hdp_flush_reg' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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