libSceVoiceQoS exported only sceVoiceQoSInit, so a title that imports
the rest of the library failed at load on unresolved imports.
Declare sceVoiceQoSEnd, the local and remote endpoint create and delete
functions, sceVoiceQoSConnect, sceVoiceQoSDisconnect, both endpoint
attribute setters, sceVoiceQoSReadPacket and sceVoiceQoSWritePacket.
Each calls NotImplemented_nid_no_patch and reads no arguments, so the
imports resolve and a call still stops with the function's name.
sceVoiceQoSInit is unchanged. Their behaviour follows in a later change,
once a title is seen to reach them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>