ASoC: wcd9320: Add NULL checks

An failed device start is bad enough, don't crash the device.
Non-negative errors look a bit funny, though.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
lowmemorykiller: Sanitize OOM for screen on/off

* Avoid using memcpy if screen on/off values are same.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm: Skip building perf debug

* Reduces non-important cruft.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
hammerhead: Rewrite memory reservation

* Get rid of membanks.
* Move to proper address.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
defconfig: Refresh and test few changes

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>