drm/i915: Remove the "pf" crc source

The "pipe" and "pf" crc sources are in fact the same thing.
Remove the "pf" one.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190214192219.3858-1-ville.syrjala@linux.intel.comReviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/i915/i915_drv.h

@@ -1198,7 +1198,6 @@ enum intel_pipe_crc_source {
 	INTEL_PIPE_CRC_SOURCE_NONE,
 	INTEL_PIPE_CRC_SOURCE_PLANE1,
 	INTEL_PIPE_CRC_SOURCE_PLANE2,
-	INTEL_PIPE_CRC_SOURCE_PF,
 	INTEL_PIPE_CRC_SOURCE_PIPE,
 	/* TV/DP on pre-gen5/vlv can't use the pipe source. */
 	INTEL_PIPE_CRC_SOURCE_TV,

drivers/gpu/drm/i915/intel_pipe_crc.c

@@ -34,7 +34,6 @@ static const char * const pipe_crc_sources[] = {
 	"none",
 	"plane1",
 	"plane2",
-	"pf",
 	"pipe",
 	"TV",
 	"DP-B",
@@ -396,7 +395,7 @@ static int ivb_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
 				bool set_wa)
 {
 	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
-		*source = INTEL_PIPE_CRC_SOURCE_PF;
+		*source = INTEL_PIPE_CRC_SOURCE_PIPE;
 
 	switch (*source) {
 	case INTEL_PIPE_CRC_SOURCE_PLANE1:
@@ -405,7 +404,7 @@ static int ivb_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
 	case INTEL_PIPE_CRC_SOURCE_PLANE2:
 		*val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_SPRITE_IVB;
 		break;
-	case INTEL_PIPE_CRC_SOURCE_PF:
+	case INTEL_PIPE_CRC_SOURCE_PIPE:
 		if (set_wa && (IS_HASWELL(dev_priv) ||
 		     IS_BROADWELL(dev_priv)) && pipe == PIPE_A)
 			hsw_pipe_A_crc_wa(dev_priv, true);
@@ -532,7 +531,6 @@ static int ivb_crc_source_valid(struct drm_i915_private *dev_priv,
 	case INTEL_PIPE_CRC_SOURCE_PIPE:
 	case INTEL_PIPE_CRC_SOURCE_PLANE1:
 	case INTEL_PIPE_CRC_SOURCE_PLANE2:
-	case INTEL_PIPE_CRC_SOURCE_PF:
 	case INTEL_PIPE_CRC_SOURCE_NONE:
 		return 0;
 	default: