drm/i915/vlv_dsi_pll: fix spelling mistake "Cant" -> "Can't"

There is a spelling mistake in a drm_err message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200810095952.60968-1-colin.king@canonical.com

drivers/gpu/drm/i915/display/vlv_dsi_pll.c

@@ -483,7 +483,7 @@ int bxt_dsi_pll_compute(struct intel_encoder *encoder,
 
 	if (dsi_ratio < dsi_ratio_min || dsi_ratio > dsi_ratio_max) {
 		drm_err(&dev_priv->drm,
-			"Cant get a suitable ratio from DSI PLL ratios\n");
+			"Can't get a suitable ratio from DSI PLL ratios\n");
 		return -ECHRNG;
 	} else
 		drm_dbg_kms(&dev_priv->drm, "DSI PLL calculation is Done!!\n");