[RESEND PATCH v2 1/2] ASoC: atmel-classd: add the Audio Class D Amplifier

Add driver for the digital imput to PWM output stereo class D amplifier. It comes with filter, digitally controlled gain, an equalizer and a dmphase filter. Signed-off-by: Songjun Wu --- Changes in v2: - Change the "Mono", "Swap" and "Deemphasis" controls to "Mono Switch", "Swap Switch" and "D

[PATCH v2 1/2] ASoC: atmel-classd: add the Audio Class D Amplifier

Add driver for the digital imput to PWM output stereo class D amplifier. It comes with filter, digitally controlled gain, an equalizer and a dmphase filter. Signed-off-by: Songjun Wu --- Changes in v2: - Change the "Mono", "Swap" and "Deemphasis" controls to "Mono Switch", "Swap Switch" and "D