msm: camera: icp: Increase free Request size

Add support for EIS - 1080p/UHD USECASE
In EIS V3 usecase actually, there was dependency being met
for first request to IPE after submitting 15 packets,
as we wait for 15 future frames to start one frame.

Change-Id: Ib1408aa08f5b97c6c889ae9ea269878a77c6608f
Signed-off-by: Mangalaram ARCHANA <mangar@codeaurora.org>