dts: arm: introduce seeed lora-e5 module

This commit adds the dts definitons for the seeed lora-e5 module.
Additionally I add myself as codeowner for the new dts/arm/seeed
directory.

This module packages a stm32wle5jc Sub-GHz Wireless Soc,
together with a 32MHz TCXO, a 32.768KHz crystal oscillator, and
power and RF circuitry.

With the introduction of lora support definitions for the radio
will be added in a future commit.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>

CODEOWNERS

@@ -359,6 +359,7 @@
 /dts/arm64/armv8-r.dtsi                   @povergoing
 /dts/arm64/nxp/                           @JiafeiPan
 /dts/arm/quicklogic/                      @wtatarski @kowalewskijan @kgugala
+/dts/arm/seeed/                           @str4t0m
 /dts/arm/st/                              @erwango
 /dts/arm/ti/cc13?2*                       @bwitherspoon
 /dts/arm/ti/cc26?2*                       @bwitherspoon

dts/arm/seeed/lora-e5.dtsi

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2021 Thomas Stranger
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <st/wl/stm32wle5Xc.dtsi>
+#include <st/wl/stm32wle5jcix-pinctrl.dtsi>
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(32)>;
+	hse-bypass;
+};
+
+&clk_lse {
+	clock-frequency = <32768>;
+};