printk fix for 4.12-rc5

Linus,

please pull a printk regression fix from:

git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk.git for-linus

========

It reverts a fix added into 4.12-rc1. It caused the kernel log to be printed on another console when two consoles of the same type were defined, e.g. console=ttyS0 console=ttyS1. This configuration was never supported by kernel itself. But it started to make sense with systemd. By other words, the commit broke userspace.

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Petr Mladek (1):
Revert "printk: fix double printing with earlycon"

 kernel/printk/printk.c | 46 ++++++++++------------------------------------
 1 file changed, 10 insertions(+), 36 deletions(-)

Best Regards,
Petr Mladek