ARM: dts: Configure also interconnect clocks for am4 system timer

We now manage clocksource and clockevent clocks directly with
timer-ti-dm-systimer. In order to use genpd with prm_omap,
GENPD_FLAG_PM_CLK and simple-pm-bus, we need to keep the system
timer related interconnect clocks enabled until clocksource suspend
is done.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am33xx.dtsi

@@ -645,6 +645,9 @@ prm_cefuse: prm@1200 {
 
 /* Preferred always-on timer for clocksource */
 &timer1_target {
+	clocks = <&l4_wkup_clkctrl AM3_L4_WKUP_TIMER1_CLKCTRL 0>,
+		 <&l4_wkup_clkctrl AM3_L4_WKUP_L4_WKUP_CLKCTRL 0>;
+	clock-names = "fck", "ick";
 	ti,no-reset-on-init;
 	ti,no-idle;
 	timer@0 {
@@ -655,6 +658,9 @@ timer@0 {
 
 /* Preferred timer for clockevent */
 &timer2_target {
+	clocks = <&l4ls_clkctrl AM3_L4LS_TIMER2_CLKCTRL 0>,
+		 <&l4ls_clkctrl AM3_L4LS_L4_LS_CLKCTRL 0>;
+	clock-names = "fck", "ick";
 	ti,no-reset-on-init;
 	ti,no-idle;
 	timer@0 {