This ccadc module is reused in multiple pmics. It is now unnecessary to check for 8921 versions in the driver. As a result of this change older 8921 versions are not supported. CRs-Fixed: 372679 Change-Id: I2114f9428e2ba1a29c2bc9caaaa75106caf1dfc3 Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>