interface: unuse the enum types defined in the interface

interface: unuse the enum types defined in the interface

 - replace with enum types provided by the API
 - remove enum list
    1) gpio_direction_e
    2) gpio_edge_e
    3) pwm_polarity_e
    4) uart_baud_rate_e
    5) uart_byte_size_e
    6) uart_parity_e
    7) uart_stop_bits_e

Change-Id: Id70350fabf29b18c7b440be8bbfdd4b99ed3b98d
Signed-off-by: Segwon <segwon.han@samsung.com>