drm: Missed clflushopt in drm_clflush_virt_range

drm: Missed clflushopt in drm_clflush_virt_range

With this commit:

2a0788dc9bc4 x86: Use clflushopt in drm_clflush_virt_range

If clflushopt is available on the system, we use it instead of clflush
in drm_clflush_virt_range.  There were two calls to clflush in this
function, but only one was changed to clflushopt.  This patch changes
the other clflush call to clflushopt.

Signed-off-by: Ross Zwisler <[email protected]>
Reported-by: Matthew Wilcox <[email protected]>
Cc: David Airlie <[email protected]>
Cc: [email protected]
Cc: H Peter Anvin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>