drm/i915: Return correct EDP voltage swing table for 0.85V

For 0.85V cnl_get_buf_trans_edp() returns the DP table, instead of EDP.
Use the correct table.

The error was pointed out by this clang warning:

drivers/gpu/drm/i915/intel_ddi.c:392:39: warning: variable
'cnl_ddi_translations_edp_0_85V' is not needed and will not be emitted
[-Wunneeded-internal-declaration]
static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V[] = {

Fixes: cf54ca8bc567 ("drm/i915/cnl: Implement voltage swing sequence.")
Signed-off-by: Matthias Kaehlcke <[e-mail]>
Reviewed-by: Manasi Navare <[e-mail]>
Signed-off-by: Rodrigo Vivi <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
(cherry picked from commit 50946c89850db13bd672c664aec6cf4551f71fe9)
Signed-off-by: Jani Nikula <[e-mail]>

drivers/gpu/drm/i915/intel_ddi.c

···
 	if (dev_priv->vbt.edp.low_vswing) {
 		if (voltage == VOLTAGE_INFO_0_85V) {
 			*n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_85V);
-			return cnl_ddi_translations_dp_0_85V;
+			return cnl_ddi_translations_edp_0_85V;
 		} else if (voltage == VOLTAGE_INFO_0_95V) {
 			*n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_95V);
 			return cnl_ddi_translations_edp_0_95V;