tests: drivers: counter: counter_basic_api: Add stm32h735g_disco overlay

Add overlay for stm32h735g_disco board to enable counter_basic_api tests
on this board

Signed-off-by: Ben Marsh <[email protected]>

Author: besmarsh

tests/drivers/counter/counter_basic_api/boards/stm32h735g_disco.overlay

@@ -0,0 +1,10 @@
+&timers2 {
+	st,prescaler = <83>;
+	counter {
+		status = "okay";
+	};
+};
+
+&rtc {
+	status = "disabled";
+};