arm64: Kconfig: Enable default config for audio

Enable MFD_CORE, SND_SOC_COMPRESS and SND_HWDEP for ARCH_QCOM.
The above MACROS are used for all QCOM ARCH type targets.
Also these cannot be enabled via defconfig as they are default
no configuration and typically enabled by the client driver.

Change-Id: I913c33da1eaad3dbdbeafa1afe81d97a31ab385a
Signed-off-by: Meng Wang <mwang@codeaurora.org>