static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
			unsigned int req_baud, struct clk **best_clk,
			unsigned int *clk_num)
static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
			unsigned int req_baud, struct clk **best_clk,
			u8 *clk_num)