tests: drivers: clock_control: Add DTC overlay for nRF9160

It's needed to specify zephyr,bt-uart device for the board.

Signed-off-by: Robert Lubos <[email protected]>

Author: rlubos

CODEOWNERS

@@ -166,6 +166,7 @@ Kconfig*                                  @tejlmand
 /subsys/zigbee/                           @tomchy @sebastiandraus
 /tests/bluetooth/tester/                  @carlescufi @trond-snekvik
 /tests/drivers/flash_nop_device/          @de-nordic
+/tests/drivers/clock_control/clock_control_mpsl/ @ryanjh
 /tests/lib/edge_impulse/                  @pdunaj @MarekPieta
 /tests/lib/hw_unique_key*/                @oyvindronningstad @Vge0rge
 /tests/lib/modem_jwt/                     @SeppoTakalo

tests/drivers/clock_control/clock_control_mpsl/boards/nrf9160dk_nrf9160.overlay

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2021 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/ {
+	chosen {
+		zephyr,bt-uart=&uart1;
+	};
+};