feat(st): update STM32MP DT files

This is an alignment with Linux DT files that have been merged in
stm32 tree [1], and will be in Linux 6.7.
The /omit-if-no-ref/ in overlay files are now removed, as already in
pinctrl files.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Iab94b0ba7a4a0288ca53d1ae57ab590566967415
diff --git a/fdts/stm32mp157c-ed1.dts b/fdts/stm32mp157c-ed1.dts
index 63753bd..949c929 100644
--- a/fdts/stm32mp157c-ed1.dts
+++ b/fdts/stm32mp157c-ed1.dts
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
- * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2023, STMicroelectronics - All Rights Reserved
  * Author: Ludovic Barre <ludovic.barre@st.com> for STMicroelectronics.
  */
 /dts-v1/;
@@ -16,6 +16,10 @@
 	model = "STMicroelectronics STM32MP157C eval daughter";
 	compatible = "st,stm32mp157c-ed1", "st,stm32mp157";
 
+	aliases {
+		serial0 = &uart4;
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
@@ -24,10 +28,6 @@
 		device_type = "memory";
 		reg = <0xC0000000 0x40000000>;
 	};
-
-	aliases {
-		serial0 = &uart4;
-	};
 };
 
 &bsec {