build: move br2 config files to a dedicated directory

br2/default

@@ -0,0 +1,70 @@
+# Custom packages
+BR2_PACKAGE_KERNEL_MODULE=y
+BR2_SAMPLE_PACKAGE=y
+
+# Rootfs
+BR2_TARGET_ROOTFS_CPIO=n
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_INITRAMFS=n
+BR2_TARGET_ROOTFS_EXT2_SIZE="512M"
+
+# We were tempted to do this to disable S40network neatly,
+# but that package also creates extra configuration files
+# such as /etc/network/interfaces which we need. So we just
+# remove the init.d file for now.
+#BR2_PACKAGE_IFUPDOWN_SCRIPTS=n
+
+# Misc
+BR2_CCACHE=y
+# Otherwise our precious debug would break!
+BR2_CCACHE_USE_BASEDIR=n
+BR2_GCC_ENABLE_GRAPHITE=y
+BR2_GCC_ENABLE_LTO=y
+BR2_GCC_ENABLE_OPENMP=y
+BR2_GLOBAL_PATCH_DIR="../global_patch_dir"
+BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="../busybox_config_fragment"
+BR2_PACKAGE_DHRYSTONE=y
+BR2_PACKAGE_FILE=y
+BR2_PACKAGE_OVERRIDE_FILE="../buildroot_override"
+BR2_PACKAGE_PCIUTILS=y
+# For qemu-ga on guest. TODO: do something with it, and document it.
+BR2_PACKAGE_QEMU=y
+BR2_PACKAGE_STRACE=y
+BR2_ROOTFS_OVERLAY="../rootfs_overlay"
+BR2_ROOTFS_POST_BUILD_SCRIPT="../rootfs_post_build_script"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="../rootfs_post_image_script"
+BR2_ROOTFS_USERS_TABLES="../user_table"
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_TOOLCHAIN_BUILDROOT_FORTRAN=y
+BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
+
+# lscpu: TODO not installing?
+BR2_PACKAGE_UTIL_LINUX=y
+BR2_PACKAGE_UTIL_LINUX_BINARIES=y
+# taskset
+BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS=y
+
+# Host GDB
+BR2_GDB_VERSION="7.11.1"
+BR2_GDB_VERSION_7_10=n
+BR2_GDB_VERSION_7_11=y
+BR2_GDB_VERSION_7_12=n
+BR2_PACKAGE_HOST_GDB=y
+BR2_PACKAGE_HOST_GDB_PYTHON=y
+BR2_PACKAGE_HOST_GDB_SIM=y
+BR2_PACKAGE_HOST_GDB_TUI=y
+
+# gdbserver
+BR2_DEBUG_3=y
+BR2_ENABLE_DEBUG=y
+BR2_OPTIMIZE_0=y
+BR2_PACKAGE_GDB=y
+BR2_PTHREAD_DEBUG=y
+
+# ftrace
+BR2_PACKAGE_TRACE_CMD=y
+
+# DTC
+BR2_PACKAGE_DTC=y
+BR2_PACKAGE_DTC_PROGRAMS=y
+BR2_PACKAGE_HOST_DTC=y