drm/i915: remove explicit CNL handling from intel_pch.c

Remove references for CNL from pch detection.
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728215946.1573015-19-lucas.demarchi@intel.com

drivers/gpu/drm/i915/intel_pch.c

@@ -81,7 +81,6 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
 	case INTEL_PCH_CNP_DEVICE_ID_TYPE:
 		drm_dbg_kms(&dev_priv->drm, "Found Cannon Lake PCH (CNP)\n");
 		drm_WARN_ON(&dev_priv->drm,
-			    !IS_CANNONLAKE(dev_priv) &&
 			    !IS_COFFEELAKE(dev_priv) &&
 			    !IS_COMETLAKE(dev_priv));
 		return PCH_CNP;
@@ -89,7 +88,6 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
 		drm_dbg_kms(&dev_priv->drm,
 			    "Found Cannon Lake LP PCH (CNP-LP)\n");
 		drm_WARN_ON(&dev_priv->drm,
-			    !IS_CANNONLAKE(dev_priv) &&
 			    !IS_COFFEELAKE(dev_priv) &&
 			    !IS_COMETLAKE(dev_priv));
 		return PCH_CNP;
@@ -171,8 +169,7 @@ intel_virt_detect_pch(const struct drm_i915_private *dev_priv,
 		id = INTEL_PCH_MCC_DEVICE_ID_TYPE;
 	else if (IS_ICELAKE(dev_priv))
 		id = INTEL_PCH_ICP_DEVICE_ID_TYPE;
-	else if (IS_CANNONLAKE(dev_priv) ||
-		 IS_COFFEELAKE(dev_priv) ||
+	else if (IS_COFFEELAKE(dev_priv) ||
 		 IS_COMETLAKE(dev_priv))
 		id = INTEL_PCH_CNP_DEVICE_ID_TYPE;
 	else if (IS_KABYLAKE(dev_priv) || IS_SKYLAKE(dev_priv))