Since commit 2ffa5310 ("ASoC: fsl_ssi: Fix module unbound") the irq
number is retrieved via platform_get_irq(), which may fail and return a negative
number, so adapt its type to 'int'.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NMark Brown <broonie@kernel.org>