support/config-fragments/autobuild: use Bootlin toolchain for ARMv7 musl

Instead of using an external toolchain built specifically for the
autobuilders to test ARMv7/musl, 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-armv7-musl.config

@@ -0,0 +1,6 @@
+BR2_arm=y
+BR2_cortex_a9=y
+BR2_ARM_ENABLE_VFP=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7_EABIHF_MUSL_STABLE=y

support/config-fragments/autobuild/br-arm-cortex-a9-musl.config

@@ -1,11 +0,0 @@
-BR2_arm=y
-BR2_cortex_a9=y
-BR2_ARM_ENABLE_VFP=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-arm-cortex-a9-musl-2020.02.tar.bz2"
-BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
-BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_4=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
-BR2_TOOLCHAIN_EXTERNAL_CXX=y

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

@@ -26,11 +26,11 @@ support/config-fragments/autobuild/andes-nds32.config,x86
 support/config-fragments/autobuild/arm-aarch64.config,x86_64
 support/config-fragments/autobuild/bootlin-aarch64-glibc.config,x86_64
 support/config-fragments/autobuild/bootlin-arcle-hs38-uclibc.config,x86_64
+support/config-fragments/autobuild/bootlin-armv7-musl.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
 support/config-fragments/autobuild/br-arm-basic.config,x86_64
-support/config-fragments/autobuild/br-arm-cortex-a9-musl.config,x86_64
 support/config-fragments/autobuild/br-arm-full-nothread.config,x86_64
 support/config-fragments/autobuild/br-arm-internal-full.config,any
 support/config-fragments/autobuild/br-arm-internal-glibc.config,any