Kbuild: Fix duplicated ksymbol UART_INTERRUPT_DRIVEN.

This commit removes the UART_INTERRUPT_DRIVEN kconfig symbol from
the console section.
The symbols is already covered as a serial driver symbol and it
is a serial feature releated configuration option.

Change-Id: I4b9438d79eb7850b1293d5d963a75ce00733dbf7
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>