msm: vidc: Correct heap masks for video secure context banks

If CP_CAMERA_ENCODE enabled for all the secure context banks,
the proper heap ids should be used for masking for the respective
video hardware , otherwise mapping would fail.

Change-Id: I4ff157dc6fdc4aeadae122fc0d6cb899409563aa
Signed-off-by: Sayantan Majumder <smajumde@codeaurora.org>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>