loadb console cleanups

[Sascha Hauer]

This series has some cleanups for the loadb support. With this loadb
uses a single console device directly to transfer files. This console
device is configurable on the command line is no longer necessarily the
console which outputs messages.

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Sascha Hauer (5):
      loadb: Use local cdev
      loadb: deactivate console before using it for loadb
      console: Set baudrate during registration
      loadb: Allow to specify device to use
      loads: Use putchar rather than console_putc

 commands/loadb.c | 78 ++++++++++++++++++++++++++++++++++++++------------------
 commands/loads.c |  6 ++---
 common/console.c | 11 +++-----
 3 files changed, 60 insertions(+), 35 deletions(-)