Revert "msm: vidc: No need to allocate metadata by default"

This reverts commit 0efc959be55801808454292cc61d11ff8ab1bfa1

Change-Id: I08163ac9e4d4481cb9df324fd8ccc14bef536d96
Signed-off-by: Prados Das <prados@codeaurora.org>
Merge "Revert "msm: vidc: No need to allocate metadata by default""