ARM: pxa: ssp: Fix "WARNING: invalid free of devm_ allocated data"

Since commit 1c459de1 ("ARM: pxa: ssp: use devm_ functions")
kfree, iounmap, clk_put etc are not needed anymore in remove path.

Fixes: 1c459de1 ("ARM: pxa: ssp: use devm_ functions")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
[ commit message spelling fix ]
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>