[U-Boot] [PATCH] Revert "serial: ns16550: fix debug uart putc called before init"

[Philipp Tomsich]

> On 03.12.2018, at 21:55, Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com> wrote:
> 
> This reverts commit 6f57c34473d37b8da5e6a3764d0d377d748aeef1 since it
> does not seem to work at least on rk3399.
> 
> The Rockchip Technical Reference Manual (TRM) for the rk3399 says the baud
> rate prescaler register is readable only when USR[0] is zero. Since this
> bit is defined as "reserved" in the socfpga cylcone5 TRM, let's rather
> drop this than making the ns16550 debug uart more platform specific.
> 
> Reported-by: Roosen Henri <Henri.Roosen at ginzinger.com>
> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>