video: exynos mipi dsi: Fix mipi dsi regulators handling issue

When FB_BLANK_UNLANK event occured, exynos mipi dsi regulators have to turn on.
Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

drivers/video/exynos/exynos_mipi_dsi.c

@@ -154,7 +154,7 @@ static int exynos_mipi_dsi_blank_mode(struct mipi_dsim_device *dsim, int power)
 		if (client_drv && client_drv->power_on)
 			client_drv->power_on(client_dev, 1);
 
-		exynos_mipi_regulator_disable(dsim);
+		exynos_mipi_regulator_enable(dsim);
 
 		/* enable MIPI-DSI PHY. */
 		if (dsim->pd->phy_enable)