ARM: at91/at91_dt_defconfig: enable sound support

As sound support depends on ssc, i2c and dma, so also enable them.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/sama5_defconfig: enable sound support

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>