Revert "soc: mediatek: SCPSYS: Fix double enabling of regulators"

This reverts commit cc8ed76938b5cf6a54ab3d60edabaf808dc960d1
("soc: mediatek: SCPSYS: Fix double enabling of regulators") [1].

This patch fixes mt8173-evb failing boot issue. With commit [1],
genpd state will not sync to real power domain state. So some
resources such as clocks and regulators may stay in a wrong state.

There is no regulator double enabling issue on mainline kernel, so
we can refert commit [1] safely.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

drivers/soc/mediatek/mtk-scpsys.c

@@ -491,13 +491,14 @@ static int scpsys_probe(struct platform_device *pdev)
 		genpd->dev_ops.active_wakeup = scpsys_active_wakeup;
 
 		/*
-		 * With CONFIG_PM disabled turn on all domains to make the
-		 * hardware usable.
+		 * Initially turn on all domains to make the domains usable
+		 * with !CONFIG_PM and to get the hardware in sync with the
+		 * software.  The unused domains will be switched off during
+		 * late_init time.
 		 */
-		if (!IS_ENABLED(CONFIG_PM))
-			genpd->power_on(genpd);
+		genpd->power_on(genpd);
 
-		pm_genpd_init(genpd, NULL, true);
+		pm_genpd_init(genpd, NULL, false);
 	}
 
 	/*