arm: dts: k3-j721e: Sync with v6.6-rc1

arm: dts: k3-j721e: Sync with v6.6-rc1

Sync k3-j721e DTS with kernel.org v6.6-rc1.

	* Use mcu_timer0 defined in k3-j721e-mcu-wakeup.dtsi and remove
	  timer0, we have its clocks set up in clk-data now
	* Remove hbmc node as support is buggy and needs to be fixed
	* Remove aliases and chosen node, use them from Kernel
	* Remove /delete-property/ and clock-frequency from sdhci,
	  usbss, and mcu_uart nodes as we have them in clk and dev data
	* Remove dummy_clocks as they are not needed
	* Remove cpsw node as it is not required since it has been fixed
	  in U-Boot
	* Remove pcie nodes, they are not needed
	* Remove mcu_i2c0 as it is used for tps659413 PMIC in j721e-sk
	  for which support is not yet added
	* Change secproxy nodes to their Linux definitions
	* Remove overriding of ti,cluster-mode in MAIN R5 to default to
	  lockstep mode same as Kernel
	* Retain tps6594 node as TPS6594 PMIC support is still under
	  review in the Kernel [1], cleanup will be taken post its merge

[1] https://lore.kernel.org/all/20230810-tps6594-v6-0-2b2e2399e2ef@ti.com/

Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
Reviewed-by: Manorit Chawdhry <m-chawdhry@ti.com>