support/config-fragments/autobuild: use Bootlin toolchain for x86-64 uclibc

Instead of using an external toolchain built specifically for the
autobuilders to test x86-64/uclibc, use a pre-built Bootlin toolchain.

The previous configuration was for Core2 platform, but the Bootlin
toolchains only provide a Core i7 configuration. Since this is close
enough, we change to use this Core i7 configuration.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

support/config-fragments/autobuild/bootlin-x86-64-uclibc.config

@@ -0,0 +1,4 @@
+BR2_x86_64=y
+BR2_x86_corei7=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_X86_64_CORE_I7_UCLIBC_STABLE=y

support/config-fragments/autobuild/br-x86-64-core2-full.config

@@ -1,11 +0,0 @@
-BR2_x86_64=y
-BR2_x86_core2=y
-BR2_TOOLCHAIN_EXTERNAL=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
-BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-x86-64-core2-full-2020.02.tar.bz2"
-BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
-BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_4=y
-BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
-# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
-BR2_TOOLCHAIN_EXTERNAL_CXX=y

support/config-fragments/autobuild/toolchain-configs.csv

@@ -41,6 +41,7 @@ support/config-fragments/autobuild/bootlin-sh4-uclibc.config,x86_64
 support/config-fragments/autobuild/bootlin-sparc-uclibc.config,x86_64
 support/config-fragments/autobuild/bootlin-sparc64-glibc.config,x86_64
 support/config-fragments/autobuild/bootlin-x86-64-glibc.config,x86_64
+support/config-fragments/autobuild/bootlin-x86-64-uclibc.config,x86_64
 support/config-fragments/autobuild/br-arc-full-internal.config,any
 support/config-fragments/autobuild/br-arc-internal-glibc.config,any
 support/config-fragments/autobuild/br-arm-basic.config,x86_64
@@ -60,7 +61,6 @@ support/config-fragments/autobuild/br-riscv64.config,x86_64
 support/config-fragments/autobuild/br-riscv64-full-internal.config,any
 support/config-fragments/autobuild/br-riscv64-musl.config,x86_64
 support/config-fragments/autobuild/br-s390x-z13-internal-glibc.config,any
-support/config-fragments/autobuild/br-x86-64-core2-full.config,x86_64
 support/config-fragments/autobuild/br-xtensa-full.config,x86_64
 support/config-fragments/autobuild/br-xtensa-full-internal.config,any
 support/config-fragments/autobuild/linaro-aarch64.config,x86