drm/i915: Sanitize the display fused-off check on GEN7/8

Detecting in intel_device_info_runtime_init() that the display is fused
off or not present should only zero intel_runtime_info::pipe_mask, while
the other related masks will be accordingly zeroed later in the
function. Remove the redundant zeroing of the related fields on GEN7/8.

Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208114300.3123934-5-imre.deak@intel.com

drivers/gpu/drm/i915/intel_device_info.c

@@ -470,8 +470,6 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 			drm_info(&dev_priv->drm,
 				 "Display fused off, disabling\n");
 			runtime->pipe_mask = 0;
-			runtime->cpu_transcoder_mask = 0;
-			runtime->fbc_mask = 0;
 		} else if (fuse_strap & IVB_PIPE_C_DISABLE) {
 			drm_info(&dev_priv->drm, "PipeC fused off\n");
 			runtime->pipe_mask &= ~BIT(PIPE_C);