Set line discipline to HCI_UART_H4 even for low power mode.

HCI_UART_LL is almost similar to H4 line and wouldn't cause
any problems since the extra packets were not being used any
way. But to avoid confusion, its being changed.

Based on a report by: goodsc.lee@samsung.com

Change-Id: Ifcb8bd5d8d619b74225057a6f7b5eee2c94a9925
1 file changed