stm32f4: fix serial output
authorkunhuahuang <huangkunhua@gmail.com>
Mon, 27 Apr 2015 18:25:45 +0000 (02:25 +0800)
committerTom Rini <trini@konsulko.com>
Sun, 10 May 2015 11:29:38 +0000 (07:29 -0400)
This patch fix the serial output.
The source is from Kamil Lulko's "stm32f429-discovery board support"

Thanks, Varcain. I learned a lot.

Signed-off-by: kunhuahuang <huangkunhua@gmail.com>

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