ASoC: msm: update machine and codec driver for proper ioremap checks

ioremapped address is directly accessed without a proper NULL check.
This causes the NULL pointer dereference leading to target crash.
Crosscheck for the address returned by the ioremap api.

Change-Id: I343a11e1dd6b4f30d2e8b2c1d10d382d3cacf3cd
Signed-off-by: Aviral Gupta <aviralg@codeaurora.org>