switch to tty1 if framebuffer device becomes available - now on all architectures (bsc#1225539)

[wfeldt]

Task

Set the default value of boot option switch_to_fb to 1.

This used to be limited to S390X in the SLE15 code stream - mainly to gather some experience in Tumbleweed.

See also

• https://github.com/openSUSE/linuxrc/pull/281