Follow firmware 13.42's libScePlayReady.sprx for sceBufferInit,
scePlayReadyBufferInit, scePlayReadyApiInitializeInitParams,
scePlayReadyInitializeInitParams, scePlayReadyApiVersion and
scePlayReadyApiVersionString, and give them their prototypes.
Co-Authored-By: Claude Opus 5.5 <[email protected]>