msm: vidc: Fix the condition to check dcvs support

DCVS limit check fails due to coding error in the condition.
With this change, dcvs-limit is correctly interpreted.

CRs-Fixed: 1074911
Change-Id: I38689d490a31a8e02688d0cacaa6f6028f6f79c8
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>