msm: vidc: Release non-requested internal buffers

during load resource firmware will check input buffer type
against requested buffer type. If there a mismatch it will
throw an error. So cleared non-requested buffer from the
scratch buffer list

Change-Id: Ifabf532982a393d4fc356ff3cad0ca3fd715fce0
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>