arm: dts: k3-am625-phycore-r5*: Remove clocks from main_timer0

The commit 79d91e77f4 ("clk: ti: clk-k3-pll: Add additional robustness
steps to the PLL sequence") introduced a change which requires the
main_timer0 to not rely on it's own clocks which anyways was wrong.

Fix it by removing the clock dependency for it, also while at it, move
it from u-boot.dtsi to R5 as that is the only entity that should require
it as DM isn't up.

Fixes: 5d1aac358f ("arm: dts: k3-*-r5: Remove clocks from mcu_timer0")
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>

arch/arm/dts/k3-am625-phyboard-lyra-rdk-u-boot.dtsi

@@ -13,7 +13,6 @@
 / {
 	chosen {
 		stdout-path = "serial2:115200n8";
-		tick-timer = &main_timer0;
 	};
 
 	aliases {
@@ -96,10 +95,6 @@
 	bootph-all;
 };
 
-&main_timer0 {
-	clock-frequency = <25000000>;
-};
-
 &main_uart0 {
 	bootph-all;
 };

arch/arm/dts/k3-am625-r5-phycore-som-2gb.dts

@@ -54,6 +54,14 @@
 	};
 };
 
+&main_timer0 {
+	/delete-property/ clocks;
+	/delete-property/ clocks-names;
+	/delete-property/ assigned-clocks;
+	/delete-property/ assigned-clock-parents;
+	clock-frequency = <25000000>;
+};
+
 &secure_proxy_sa3 {
 	/* We require this for boot handshake */
 	status = "okay";