drm/msm/dsi: Hook up refgen regulator

Consume the refgen supply on configurations that may use it.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/545333/
Link: https://lore.kernel.org/r/20230628-topic-refgen-v3-4-9fbf0e605d23@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/dsi/dsi_cfg.c

@@ -160,6 +160,7 @@ static const char * const dsi_v2_4_clk_names[] = {
 
 static const struct regulator_bulk_data dsi_v2_4_regulators[] = {
 	{ .supply = "vdda", .init_load_uA = 21800 },	/* 1.2 V */
+	{ .supply = "refgen" },
 };
 
 static const struct msm_dsi_config sdm845_dsi_cfg = {
@@ -191,6 +192,7 @@ static const struct msm_dsi_config sm8550_dsi_cfg = {
 
 static const struct regulator_bulk_data sc7280_dsi_regulators[] = {
 	{ .supply = "vdda", .init_load_uA = 8350 },	/* 1.2 V */
+	{ .supply = "refgen" },
 };
 
 static const struct msm_dsi_config sc7280_dsi_cfg = {