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

Instead of using an external toolchain built specifically for the
autobuilders to test ARMv7-M/uclibc, 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-armv7m-uclibc.config

@@ -0,0 +1,4 @@
+BR2_arm=y
+BR2_cortex_m4=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7M_UCLIBC_STABLE=y

support/config-fragments/autobuild/br-arm-cortex-m4-full.config

@@ -1,12 +0,0 @@
-BR2_arm=y
-BR2_cortex_m4=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-m4-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_HAS_THREADS_NPTL is not set
-BR2_TOOLCHAIN_EXTERNAL_CXX=y

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

@@ -10,7 +10,7 @@ support/config-fragments/autobuild/bootlin-armv5-uclibc.config,x86_64
 support/config-fragments/autobuild/bootlin-armv7-glibc.config,x86_64
 
 # Test a noMMU toolchain with no dynamic library support
-support/config-fragments/autobuild/br-arm-cortex-m4-full.config,x86_64
+support/config-fragments/autobuild/bootlin-armv7m-uclibc.config,x86_64
 
 # Test a musl toolchain
 support/config-fragments/autobuild/br-x86-64-musl.config,x86_64