[U-Boot] 82xx serial, smc: add configurable SMC Rx buffer len

[Wolfgang Denk]

Dear Heiko Schocher,

In message <4982EABA.7090901 at denx.de> you wrote:
> This patch adds the configuration option CONFIG_SYS_SMC_RXBUFLEN.
> With this option it is possible to allow the receive
> buffer for the SMC on 82xx to be greater then 1. In case
> CONFIG_SYS_SMC_RXBUFLEN == 1 this driver works as the
> old version.
> 
> When defining CONFIG_SYS_SMC_RXBUFLEN also
> CONFIG_SYS_MAXIDLE must be defined to setup the maximum
> idle timeout for the SMC.
> 
> Signed-off-by: Heiko Schocher <hs at denx.de>
> ---
>  README                   |    8 ++++
>  cpu/mpc8260/serial_smc.c |   97 ++++++++++++++++++++++++++++-----------------
>  2 files changed, 68 insertions(+), 37 deletions(-)

Applied, thanks.

Best regards,

Wolfgang Denk

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