Revert "serial: amba-pl011: Make sure we initialize the port.lock spinlock"

Revert "serial: amba-pl011: Make sure we initialize the port.lock spinlock"

This reverts commit f487060d19ecfcc72a705f88b1dd71e649a89d06.

There has been a quick fix against uninitialised lock revealed by
the commit c1964b873471 ("serial: core: Initialise spin lock before use
in uart_configure_port()"). Since we have now better fix in serial core,
this may be safely reverted.

Fixes: f487060d19ec ("serial: amba-pl011: Make sure we initialize the port.lock spinlock")
Depends-on: c1964b873471 ("serial: core: Initialise spin lock before use in uart_configure_port()")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200711135346.71171-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>