drm/i915: s/LFP/LPF in DPIO PLL register names

LPF is short for "low pass filter".

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f72d5a3..04cf6c0 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1862,10 +1862,10 @@
 	seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
 		   vlv_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
 
-	seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
-		   vlv_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
-	seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
-		   vlv_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
+	seq_printf(m, "DPIO_LPF_COEFF_A: 0x%08x\n",
+		   vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_A));
+	seq_printf(m, "DPIO_LPF_COEFF_B: 0x%08x\n",
+		   vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_B));
 
 	seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
 		   vlv_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));