configs/mx51evk: bump kernel to 5.10.218 to fix build

Since commit dc0f721 "package/gcc: switch to 13.x as default",
mx51evk_defconfig is failing to build in Kernel (see [1]),
with output:

    drivers/ata/libahci.c: In function 'ahci_led_store':
    ././include/linux/compiler_types.h:315:45: error: call to '__compiletime_assert_328' declared with attribute error: BUILD_BUG_ON failed: sizeof(_s) > sizeof(long)
      315 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
          |                                             ^

This commit fixes the issue by bumping the Kernel to 5.10.218.

The kernel commit fixing the build failure is [2], first included in
v5.10.184. There is also many other gcc-13 fixes.

While bumping the Kernel, this commit also enables
BR2_DOWNLOAD_FORCE_CHECK_HASHES=y, add the relevant archive hash files,
and removes the defconfig entry in ".checkpackageignore".

Fixes: [1]

[1] https://gitlab.com/buildroot.org/buildroot/-/jobs/6918688967
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4c3ddc06cedb62f2904e58fd95170bf206bee149

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

.checkpackageignore

@@ -235,7 +235,6 @@ configs/microchip_sama7g5ek_mmc_defconfig lib_defconfig.ForceCheckHash
 configs/microchip_sama7g5ek_mmc_dev_defconfig lib_defconfig.ForceCheckHash
 configs/minnowboard_max_defconfig lib_defconfig.ForceCheckHash
 configs/mx25pdk_defconfig lib_defconfig.ForceCheckHash
-configs/mx51evk_defconfig lib_defconfig.ForceCheckHash
 configs/mx53loco_defconfig lib_defconfig.ForceCheckHash
 configs/mx6cubox_defconfig lib_defconfig.ForceCheckHash
 configs/mx6sx_udoo_neo_defconfig lib_defconfig.ForceCheckHash

board/freescale/imx51evk/patches/linux-headers/linux-headers.hash

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

board/freescale/imx51evk/patches/linux/linux.hash

@@ -0,0 +1,2 @@
+# From: https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
+sha256  9c36b243e8c3ec1d5963366618f336710b84340bf95be2037b26c452392cb2d6  linux-5.10.218.tar.xz

board/freescale/imx51evk/patches/uboot/uboot.hash

@@ -0,0 +1,2 @@
+# Locally computed:
+sha256  b407e1510a74e863b8b5cb42a24625344f0e0c2fc7582d8c866bd899367d0454  u-boot-2021.01.tar.bz2

configs/mx51evk_defconfig

@@ -2,6 +2,10 @@
 BR2_arm=y
 BR2_cortex_a8=y
 
+# Global patches directory and hash check
+BR2_GLOBAL_PATCH_DIR="board/freescale/imx51evk/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+
 # Linux headers same as kernel, a 5.10 series
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y
 
@@ -28,7 +32,7 @@ BR2_TARGET_UBOOT_FORMAT_IMX=y
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.10.9"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.10.218"
 BR2_LINUX_KERNEL_DEFCONFIG="imx_v6_v7"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx51-babbage"