console/shell: Switch to generic console input

Let's use the generic console input type now. This will be useful for
other console input drivers such as telnet.

Change-Id: I787a1e9d86481d5f8c4803453726d9042a89dea4
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
3 files changed