spi: s3c64xx: print fifo size on probe.

Printing the FIFO depth does not add much noise in the log and can be useful
for debugging transfer issues.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --cc drivers/spi/spi-s3c64xx.c
Simple merge