drm/i915: vlv does not have pipe field in backlight registers

It has per pipe registers.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index e82b2dd..5bd64db 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -788,8 +788,6 @@
 	if (tmp & BLM_PWM_ENABLE)
 		return;
 
-	tmp &= ~BLM_PIPE_SELECT;
-	tmp |= BLM_PIPE(pipe);
 	tmp &= ~BLM_PWM_ENABLE;
 
 	I915_WRITE(VLV_BLC_PWM_CTL2(pipe), tmp);