drivers/uart/sifive.c: Fix divisor calculation

The divisor is calculated using the following formula:
div = (frequency / baudrate) - 1;

The current implementation however essentially calculates:
div = (frequency / baudrate);

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I8a0898ce9016a70c0f91dc8a99fc1cf9e46d20c4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79951
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>

0 files changed, 0 insertions, 0 deletions