update lcdc driver to solve the problem in HDMI does not boot.
add PWM pressure regulating mechanism.
add headset distinguish driver.
update adc key driver.
add codec alc3261's info in board file.
add remote control driver.
update rtc HYM8563 driver.
raise the voltage to solve problems of machine crashes.
IO config(power led, 3g IO, USB hub reset pin).
create melody default config file.