arm: dts: sync am33xx with Linux 5.9-rc7

There have been several changes to the am33xx.dtsi, so this patch
re-syncs it with Linux.

Let's add proper interconnect hierarchy for l4 interconnect instances
with the related ti-sysc interconnect module data as documented in
Documentation/devicetree/bindings/bus/ti-sysc.txt of the Linux kernel.
With l4 interconnect hierarchy and ti-sysc interconnect target module
data in place, we can simply move all the related child devices to their
proper location and enable probing using ti-sysc.

The am33xx-clock.dtsi file is the same as that of the Linux kernel,
except for the reg property of the node l4-wkup-clkctrl@0.
As for the am33xx.dtsi file, all the devices with drivers not yet
implemented and those I was able to test with this patch have been moved
to am33xx-l4.dtsi. In case of any regressions, problem devices can be
reverted by moving them back and removing the related interconnect
target module node.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
diff --git a/arch/arm/dts/am335x-rut.dts b/arch/arm/dts/am335x-rut.dts
index 1452473..cc06f5d 100644
--- a/arch/arm/dts/am335x-rut.dts
+++ b/arch/arm/dts/am335x-rut.dts
@@ -174,7 +174,7 @@
 &epwmss0 {
 	status = "okay";
 
-	ecap0: ecap@48300100 {
+	ecap0: ecap@100 {
 		status = "okay";
 		pinctrl-names = "default";
 		pinctrl-0 = <&ecap0_pins>;