drm/i915: Fixup kerneldoc for intel_device_info_runtime_init

CC [M]  drivers/gpu/drm/i915/intel_device_info.o
drivers/gpu/drm/i915/intel_device_info.c:727: warning: Function parameter or member 'dev_priv' not described in 'intel_device_info_runtime_init'
drivers/gpu/drm/i915/intel_device_info.c:727: warning: Excess function parameter 'info' description in 'intel_device_info_runtime_init'

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190105014652.3472-1-chris@chris-wilson.co.uk