s5j/spi: check for invalid port input parameter
s5j/spi: check for invalid port input parameter

Change-Id: If7cf757bcc2f1bd2ff5e1da36962cb8bf09ccbba
Signed-off-by: Gregory Lemercier <8dfc97fc6edd815cc4739eb8e7c74f3c8222d00f@samsung.com>

JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT