[Buildroot] [git commit branch/2025.08.x] configs/stm32mp1*_dk*: bump Linux to 6.12.53

[Arnout Vandecappelle]

commit: https://git.buildroot.net/buildroot/commit/?id=0acc865d15a0b6e93daec1f1c8aa7d3265ff5de8
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2025.08.x

The patch bumps the Linux kernel to version 6.12.53

- stm32mp135f_dk_defconfig
- stm32mp157a_dk1_defconfig
- stm32mp157c_dk2_defconfig

Tested on STM32MP157C-DK2 Discovery Board.

Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
Signed-off-by: Julien Olivain <ju.o at free.fr>
(cherry picked from commit 4552ed40bc36c2cb01378901b5f7987c66992ce8)
[thomas: Only kernel bump]
Signed-off-by: Thomas Perale <thomas.perale at mind.be>
---
 board/stmicroelectronics/common/stm32mp1xx/patches/linux/linux.hash | 2 +-
 configs/stm32mp135f_dk_defconfig                                    | 2 +-
 configs/stm32mp157a_dk1_defconfig                                   | 2 +-
 configs/stm32mp157c_dk2_defconfig                                   | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/board/stmicroelectronics/common/stm32mp1xx/patches/linux/linux.hash b/board/stmicroelectronics/common/stm32mp1xx/patches/linux/linux.hash
index df103b8199..4ac46f027b 100644
--- a/board/stmicroelectronics/common/stm32mp1xx/patches/linux/linux.hash
+++ b/board/stmicroelectronics/common/stm32mp1xx/patches/linux/linux.hash
@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  ab48800ab49985a78d2318ae8ac5f28fd3e123ea17357ef21498105a53337336  linux-6.12.22.tar.xz
+sha256  663507accae673afcf4e210b4ae8d4352e61d926202e5da3f04bf71ca1d2c0b5  linux-6.12.53.tar.xz
diff --git a/configs/stm32mp135f_dk_defconfig b/configs/stm32mp135f_dk_defconfig
index 3ba1acac81..449f4077cb 100644
--- a/configs/stm32mp135f_dk_defconfig
+++ b/configs/stm32mp135f_dk_defconfig
@@ -8,7 +8,7 @@ BR2_ROOTFS_OVERLAY="board/stmicroelectronics/stm32mp135f-dk/overlay"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/stmicroelectronics/common/stm32mp1xx/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.22"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.53"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/stmicroelectronics/stm32mp135f-dk/linux.config"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
diff --git a/configs/stm32mp157a_dk1_defconfig b/configs/stm32mp157a_dk1_defconfig
index d96ff54dc9..e42be29489 100644
--- a/configs/stm32mp157a_dk1_defconfig
+++ b/configs/stm32mp157a_dk1_defconfig
@@ -7,7 +7,7 @@ BR2_ROOTFS_OVERLAY="board/stmicroelectronics/stm32mp157a-dk1/overlay/"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/stmicroelectronics/common/stm32mp1xx/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.22"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.53"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/stmicroelectronics/stm32mp157a-dk1/linux.config"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
diff --git a/configs/stm32mp157c_dk2_defconfig b/configs/stm32mp157c_dk2_defconfig
index 183e3ab862..8bf7f24c26 100644
--- a/configs/stm32mp157c_dk2_defconfig
+++ b/configs/stm32mp157c_dk2_defconfig
@@ -7,7 +7,7 @@ BR2_ROOTFS_OVERLAY="board/stmicroelectronics/stm32mp157c-dk2/overlay/"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/stmicroelectronics/common/stm32mp1xx/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.22"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.53"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/stmicroelectronics/stm32mp157c-dk2/linux.config"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y