staging: ks7010: change local variable type in ks7010_sdio_init_irqs

Local variable 'byte' in ks7010_sdio_init_irqs is declared as
unsigned char and can be declared as u8 which is preferred.
It is being used in calls to ks7010_sdio_writeb which is already
expected an u8.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks7010_sdio.c

@@ -904,7 +904,7 @@ static int ks7010_sdio_setup_irqs(struct sdio_func *func)
 static void ks7010_sdio_init_irqs(struct sdio_func *func,
 				  struct ks_wlan_private *priv)
 {
-	unsigned char byte;
+	u8 byte;
 	int ret;
 
 	/*