drm/i915: Tidy the macro casting by using an inline function
drm/i915: Tidy the macro casting by using an inline function

Some of our macros we trying to convert from an drm_device to a
drm_i915_private and then use the pointer inline. This is not only
cumbersome but prone to error. Replacing it with a typesafe function
should help catch those errors in future.

Signed-off-by: Chris Wilson <711c73f64afdce07b7e38039a96d2224209e9a6c@chris-wilson.co.uk>
Reviewed-by: Paulo Zanoni <cc0e04a2103c45cd195651d976f79813d0f66bdf@intel.com>
Signed-off-by: Ben Widawsky <73675debcd8a436be48ec22211dcf44fe0df0a64@bwidawsk.net>
[danvet: Squash in fixup to correctly order static vs. inline
qualifiers, static comes first. Also fix up another offender.]
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs