drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:610:33: sparse: symbol 'pxtal_data' was not declared. Should it be static?

[kbuild test robot]

Hi Enric,

FYI, build test results on v4.3-rc2 (pls ignore if it's inappropriate base for your patch).

reproduce:
  # apt-get install sparse
  make ARCH=x86_64 allmodconfig
  make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:610:33: sparse: symbol 'pxtal_data' was not declared. Should it be static?
>> drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:643:6: sparse: symbol 'sp_tx_initialization' was not declared. Should it be static?
>> drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:2188:6: sparse: symbol 'sp_initialization' was not declared. Should it be static?
>> drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:649:30: sparse: cast truncates bits from constant value (ffffff7f becomes 7f)
   drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:2129:30: sparse: cast truncates bits from constant value (ffffff7f becomes 7f)
>> drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c:2140:38: sparse: cast truncates bits from constant value (ffffff1f becomes 1f)

Please review and possibly fold the followup patch.

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