support/testing: test_glxinfo: bump to kernel 4.19.204

The kernel 4.16.7 curently used by the test doesn't build with host
gcc >= 10 due the gcc default -fno-common. See GCC 10 porting guide [1].

/usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x20): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here

Bump to the next LTS release.

[1] https://gcc.gnu.org/gcc-10/porting_to.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 73278c8a70783ded4868542339c16968598d3048)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/testing/tests/package/test_glxinfo.py

@@ -20,7 +20,7 @@ class TestGlxinfo(infra.basetest.BRTest):
         BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
         BR2_LINUX_KERNEL=y
         BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-        BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.16.7"
+        BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.19.204"
         BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
         BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux.config"
         BR2_PACKAGE_MESA3D_DEMOS=y