Upgrade kernel to 6.18-rc4

Author: mattiaswal

configs/aarch64_defconfig

@@ -28,7 +28,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-build
 BR2_ROOTFS_POST_IMAGE_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.57"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18-rc4"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="${BR2_EXTERNAL_INFIX_PATH}/board/aarch64/linux_defconfig"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y

configs/aarch64_minimal_defconfig

@@ -27,7 +27,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-build
 BR2_ROOTFS_POST_IMAGE_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.57"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18-rc4"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="${BR2_EXTERNAL_INFIX_PATH}/board/aarch64/linux_defconfig"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y

configs/x86_64_defconfig

@@ -27,7 +27,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="board/qemu/x86_64/post-build.sh ${BR2_EXTERNAL_INF
 BR2_ROOTFS_POST_IMAGE_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.57"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18-rc4"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="${BR2_EXTERNAL_INFIX_PATH}/board/x86_64/linux_defconfig"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y

configs/x86_64_minimal_defconfig

@@ -27,7 +27,7 @@ BR2_ROOTFS_POST_BUILD_SCRIPT="board/qemu/x86_64/post-build.sh ${BR2_EXTERNAL_INF
 BR2_ROOTFS_POST_IMAGE_SCRIPT="${BR2_EXTERNAL_INFIX_PATH}/board/common/post-image.sh"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.57"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18-rc4"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="${BR2_EXTERNAL_INFIX_PATH}/board/x86_64/linux_defconfig"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y