toolchain/toolchain-external: update Arm AArch64 toolchain 9.2-2019.12

Update to gcc 9.2.1, gdb 8.3.0, binutils 2.33.1.

See "Release Note":
https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads#

Tested with qemu_aarch64_virt_defconfig.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in

@@ -1,5 +1,5 @@
 config BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
-	bool "Arm AArch64 2019.03"
+	bool "Arm AArch64 2019.12"
 	depends on BR2_aarch64
 	depends on BR2_HOSTARCH = "x86_64"
 	depends on !BR2_STATIC_LIBS
@@ -7,8 +7,8 @@ config BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
 	select BR2_TOOLCHAIN_HAS_SSP
 	select BR2_INSTALL_LIBSTDCPP
 	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
-	select BR2_TOOLCHAIN_GCC_AT_LEAST_8
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_9
 	select BR2_TOOLCHAIN_HAS_FORTRAN
 	select BR2_TOOLCHAIN_HAS_OPENMP
 	help

toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in.options

@@ -1,7 +1,7 @@
 if BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
 
 config BR2_TOOLCHAIN_EXTERNAL_PREFIX
-	default "aarch64-linux-gnu"
+	default "aarch64-none-linux-gnu"
 
 config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
 	default "toolchain-external-arm-aarch64"

toolchain/toolchain-external/toolchain-external-arm-aarch64/toolchain-external-arm-aarch64.hash

@@ -1,4 +1,4 @@
-# From https://developer.arm.com/-/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz.asc
-md5 c7e2ae4fd6a66df642d59e8453775b4c gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz
+# From https://developer.arm.com/-/media/Files/downloads/gnu-a/9.2-2019.12/binrel/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu.tar.xz.asc
+md5 23ecc1dc528253c43e43365c6d923ec3 gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu.tar.xz
 # locally calculated
-sha256 8ce3e7688a47d8cd2d8e8323f147104ae1c8139520eca50ccf8a7fa933002731 gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz
+sha256 8dfe681531f0bd04fb9c53cf3c0a3368c616aa85d48938eebe2b516376e06a66 gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu.tar.xz

toolchain/toolchain-external/toolchain-external-arm-aarch64/toolchain-external-arm-aarch64.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION = 2019.03
-TOOLCHAIN_EXTERNAL_ARM_AARCH64_SITE = https://developer.arm.com/-/media/Files/downloads/gnu-a/8.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)/binrel
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION = 2019.12
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_SITE = https://developer.arm.com/-/media/Files/downloads/gnu-a/9.2-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)/binrel
 
-TOOLCHAIN_EXTERNAL_ARM_AARCH64_SOURCE = gcc-arm-8.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)-x86_64-aarch64-linux-gnu.tar.xz
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_SOURCE = gcc-arm-9.2-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)-x86_64-aarch64-none-linux-gnu.tar.xz
 
 $(eval $(toolchain-external-package))