drm/i915: Grammar s/the its/its/

Fix the grammar.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190607113118.14645-1-geert+renesas@glider.be
1 file changed