drm.h: fix FTBS on Solaris / Illumos on missing _IOC() macro
The headers expect certain platform types and macros that aren't available on Solaris or Illumos.
Signed-off-by: Enrico Weigelt, metux IT consult info@metux.net
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The headers expect certain platform types and macros that aren't available on Solaris or Illumos.
Signed-off-by: Enrico Weigelt, metux IT consult info@metux.net