msm: camera: cci: Enable compilation for cci dump code

CCI register dump is only enable when dump flag is defined. Remove
this flag and add control via debugfs entry. This change helps
debugfs entry to control cci device individually on the fly for
debugging rather than to rebuild.

CRs-Fixed: 2692379
Change-Id: Ic13dc903e861e7c49bf3b375a66b96bfbe5d9c70
Signed-off-by: shiwgupt <shiwgupt@codeaurora.org>