serial: 8250_exar: Make type of bit the same in exar_ee_*_bit()

Make type of bit parameter and returned one the same in exar_ee_*_bit().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Parker Newman <pnewman@connecttech.com>
Link: https://lore.kernel.org/r/20240503171917.2921250-13-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: andy-shev

drivers/tty/serial/8250/8250_exar.c

@@ -280,7 +280,7 @@ static inline void exar_ee_deselect(struct exar8250 *priv)
 	exar_write_reg(priv, UART_EXAR_REGB, 0x00);
 }
 
-static inline void exar_ee_write_bit(struct exar8250 *priv, int bit)
+static inline void exar_ee_write_bit(struct exar8250 *priv, u8 bit)
 {
 	u8 value = UART_EXAR_REGB_EECS;