msm: vidc: Enable HDR10+ metadata for HEVC decoder

HEVC can have HDR10+ clips. This is not known during start of decoding.
Hence, HDR10+ metadata parsing needs to be enabled by default.

CRs-Fixed: 2384822
Change-Id: I3733eba13f7ea6b896c6d317925ee917e244f417
Signed-off-by: Mihir Ganu <mganu@codeaurora.org>