superio: Uncomment the w83627uhg UART clock source initialization

The asrock/imb-a180 mainboard is the first mainboard to use this
w83627uhg/nct6627UD sio. The default h/w clock setting is 0. Adding
the SIO in the mainboard Kconfig made the builder complain that the
set_uart_clock_source() wasn't being used. So the calls to that function
were uncommented.

Change-Id: Iedba035237c5c0fa230b02ff4799bb8c1b7bbd4a
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/4573
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
1 file changed