spi/s3c64xx: Drop extra calls to spi_master_get in suspend/remove functions

Suspend and resume functions call spi_master_get() without matching
spi_master_put(). The extra references are unnecessary and cause subsequent
module unload attempts to fail. Drop the calls.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>