[PATCH][drm-next] drm/i915/csr: fix spelling mistake "firmare" -> "firmware"

[Chris Wilson]

Quoting Colin King (2018-11-07 10:22:11)
> From: Colin Ian King <colin.king at canonical.com>
> 
> Trivial fix to spelling mistake in DRM_INFO message
> 
> Signed-off-by: Colin Ian King <colin.king at canonical.com>

Thank you for the spelling correction, applied.
-Chris