support/testing: test_glxinfo: switch to Gallium swrast

Since the mesa3d bump to version 21.0.3 [1], the
BR2_PACKAGE_MESA3D_DRI_DRIVER_SWRAST option is not supported anymore
since the mesa DRI swrast driver has been removed upstream

So, switch to Gallium swrast.

[1]15a2f9b819806d38a7d8172a20f80130b1d60e63

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

support/testing/tests/package/test_glxinfo.py

@@ -25,7 +25,7 @@ class TestGlxinfo(infra.basetest.BRTest):
         BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86/linux.config"
         BR2_PACKAGE_MESA3D_DEMOS=y
         BR2_PACKAGE_MESA3D=y
-        BR2_PACKAGE_MESA3D_DRI_DRIVER_SWRAST=y
+        BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_SWRAST=y
         BR2_PACKAGE_MESA3D_OPENGL_GLX=y
         BR2_PACKAGE_XORG7=y
         BR2_PACKAGE_XSERVER_XORG_SERVER=y