support/config-fragments/autobuild: use Bootlin toolchain for SPARC64 glibc

Instead of using an external toolchain built specifically for the
autobuilders to test SPARC64/glibc, use a pre-built Bootlin toolchain.

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-sparc64-glibc.config

@@ -0,0 +1,3 @@
+BR2_sparc64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_SPARC64_GLIBC_STABLE=y

support/config-fragments/autobuild/br-sparc64-glibc.config

@@ -1,8 +0,0 @@
-BR2_sparc64=y
-BR2_TOOLCHAIN_EXTERNAL=y
-BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-sparc64-full-2020.02.tar.bz2"
-BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
-BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_14=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
-BR2_TOOLCHAIN_EXTERNAL_CXX=y

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

@@ -39,6 +39,7 @@ support/config-fragments/autobuild/bootlin-powerpc-e500mc-uclibc.config,x86_64
 support/config-fragments/autobuild/bootlin-riscv32-glibc.config,x86_64
 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/br-arc-full-internal.config,any
 support/config-fragments/autobuild/br-arc-internal-glibc.config,any
@@ -59,7 +60,6 @@ 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-sparc64-glibc.config,x86_64
 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