Use hal interface

Use hal interface

hal interfaces were added. Besides, structure and enum names were changed
for better readability. In case of enum, audio_return_t is changed to
audio_return_'e', and device_info_t is changed to device_info_'s'.

[Version] 0.2.27
[Issue Type] None

Change-Id: If1100477ec61b583fc274bf7846cbe03352aa373
Signed-off-by: Jaechul Lee <jcsing.lee@samsung.com>