S5P: serial: Use the inline function instead of static value

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/include/asm/arch-s5pc1xx/uart.h

@@ -48,7 +48,10 @@ struct s5p_uart {
 	unsigned char	res3[0x3d0];
 };
 
-static int use_divslot = 1;
+static inline int s5p_uart_divslot(void)
+{
+	return 1;
+}
 
 #endif	/* __ASSEMBLY__ */
 

drivers/serial/serial_s5p.c

@@ -72,7 +72,7 @@ void serial_setbrg_dev(const int dev_index)
 
 	writel(val / 16 - 1, &uart->ubrdiv);
 
-	if (use_divslot)
+	if (s5p_uart_divslot())
 		writew(udivslot[val % 16], &uart->rest.slot);
 	else
 		writeb(val % 16, &uart->rest.value);