Fix: Do not delete the pmic-shutdown-controller property.

According to mailing list, this property actually pevents damage to devices
and uboot is build without rtc-only support anyways.

https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/arch/arm/boot/dts/am335x-bone-common.dtsi?h=linux-5.10.y&id=7a6cb0abe1aa63334f3ded6d2b6c8eca80e72302



After some tests, the led_red is off when shutdown. Only remaining issue is
that VDD_3V3AUX is still on after the device is supposed to have shutdown.
This is also present with the previous state.

Signed-off-by: Patrick Menschel <menschel.p@posteo.de>

src/arm/am335x-boneblue.dts

@@ -723,8 +723,6 @@
 };
 
 &tps {
-	/delete-property/ ti,pmic-shutdown-controller;
-
 	charger {
 		status = "okay";
 	};