msm: vidc: Fixing debugfs_create issue for sys cache

While creating disable_video_syscache, "&&" is missing.

CRs-Fixed: 2053067
Change-Id: I178bf43d8cadca9f00f854be8d5b7956b54ce4f4
Signed-off-by: Shivendra Kakrania <shiven@codeaurora.org>