configs/imxrt1050-evk: Check hashes, use bootlin toolchain

This commit adds BR2_DOWNLOAD_FORCE_CHECK_HASHES=y and
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7_EABIHF_GLIBC_STABLE=y in the
defconfig, bumps kernel to 6.12.43, and adds custom hash files.
The exception entry in .checkpackageignore is also removed.

Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
[Peter: correct linux-headers.patch symlink]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

.checkpackageignore

@@ -156,7 +156,6 @@ configs/imx6ullevk_defconfig lib_defconfig.ForceCheckHash
 configs/imx6ulpico_defconfig lib_defconfig.ForceCheckHash
 configs/imx7dpico_defconfig lib_defconfig.ForceCheckHash
 configs/imx8mqevk_defconfig lib_defconfig.ForceCheckHash
-configs/imxrt1050-evk_defconfig lib_defconfig.ForceCheckHash
 configs/khadas_vim3_defconfig lib_defconfig.ForceCheckHash
 configs/kontron_bl_imx8mm_defconfig lib_defconfig.ForceCheckHash
 configs/kontron_pitx_imx8m_defconfig lib_defconfig.ForceCheckHash

board/freescale/imxrt1050evk/patches/linux-headers/linuux-headers.hash

@@ -0,0 +1 @@
+../linux/linux.hash

board/freescale/imxrt1050evk/patches/linux/linux.hash

@@ -0,0 +1,2 @@
+# From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
+sha256  0fcbbbbcd456e87bbbfc8bf37af541fda62ccfcce76903503424fd101ef7bdee  linux-6.12.43.tar.xz

board/freescale/imxrt1050evk/patches/uboot/uboot.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256  0f933f6c5a426895bf306e93e6ac53c60870e4b54cda56d95211bec99e63bec7  u-boot-2025.07.tar.bz2

configs/imxrt1050-evk_defconfig

@@ -1,12 +1,16 @@
 BR2_arm=y
 BR2_cortex_m7=y
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_7=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7_EABIHF_GLIBC_STABLE=y
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_GLOBAL_PATCH_DIR="board/freescale/imxrt1050evk/patches"
 BR2_ROOTFS_OVERLAY="board/freescale/imxrt1050evk/rootfs_overlay"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/freescale/imxrt1050evk/genimage.cfg"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.7"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.43"
 BR2_LINUX_KERNEL_DEFCONFIG="imxrt"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="nxp/imx/imxrt1050-evk"