media: v4l2-core: guard code against ABI breakage

Guard the code against ABI breakage using IS_ENABLED Helper macro.
Guarded code will be compiled when config is set to m or y.

CRs-Fixed: 2579332
Change-Id: Ic1a5ab22c8ced2c7b527bf5086c2c7b14fe24919
Signed-off-by: himta ram <hram@codeaurora.org>