ARM: OMAP: Enable serial idling and wakeup features

Enable serial idling and wakeup features

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index aaa5589..e9c367f 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -84,7 +84,7 @@
 	serial_write_reg(p, UART_OMAP_MDR1, 0x07);
 	serial_write_reg(p, UART_OMAP_SCR, 0x08);
 	serial_write_reg(p, UART_OMAP_MDR1, 0x00);
-	serial_write_reg(p, UART_OMAP_SYSC, 0x01);
+	serial_write_reg(p, UART_OMAP_SYSC, (0x02 << 3) | (1 << 2) | (1 << 0));
 }
 
 void __init omap_serial_init()