[HEVCe HW] Inherit GPB value during resets
[HEVCe HW] Inherit GPB value during resets

Now GPB won't fall back to the default "on" value if it is
left unspecified after encoder reset, but will instead
keep the pre-reset value.

Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK,Intel-Media-SDK/MediaSDK