Revert "usb: pl2303: do not round to the next nearest standard baud rate for the...

Revert "usb: pl2303: do not round to the next nearest standard baud rate for the divisor based baud rate encoding method"

This reverts commit 0bc9be5cfa52d29a4a199a5aa6977fae13acc245.

Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip.  This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.

Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>