Bump buildroot and binutils version to stable tag

The stable tag of buildroot is 2024.02.x currently. Thus, upgrade the
default buildroot version of 2023.11.x to 2024.02.x .

The commit 1391c99 in branch 2024.02.x of buildroot dropped the support
of 2.38.x series of binutils and set the default version to 2.40.x. To
ensure the compliance, upgrade the default configuration of buildroot as
well.

This commit also fix the bumping to the wrong version of binutils in
commit 2c1e29c.

configs/buildroot.config

@@ -22,7 +22,7 @@ BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
 BR2_TOOLCHAIN_BUILDROOT_LIBC="glibc"
 # BR2_TOOLCHAIN_BUILDROOT_CXX is not set
 BR2_KERNEL_HEADERS_6_1=y
-BR2_BINUTILS_VERSION_2_42_X=y
+BR2_BINUTILS_VERSION_2_40_X=y
 # BR2_BINUTILS_GPROFNG is not set
 BR2_GCC_VERSION_12_X=y
 BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-softfloat"

scripts/build-image.sh

@@ -21,7 +21,7 @@ PARALLEL="-j$(nproc)"
 
 function do_buildroot
 {
-    ASSERT git clone https://github.com/buildroot/buildroot -b 2023.11.x --depth=1
+    ASSERT git clone https://github.com/buildroot/buildroot -b 2024.02.x --depth=1
     cp -f configs/buildroot.config buildroot/.config
     cp -f configs/busybox.config buildroot/busybox.config
     # Otherwise, the error below raises: