Kconfig: enable default config for audio.

Enable MFD_CORE and SND_SOC_COMPRESS 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.
Audio MFD[Muulti Functional Drivers] for codec needs MFD CORE and
SND_SOC_COMPRESS to be enabled.

Change-Id: I5ed0258137b6839767a4af56d4bbb0ace3eb2a5c
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>