* sceNp: Fix ExitSpawn and ExitSpawn2
Fixes sceNpDrmProcessExitSpawn and sceNpDrmProcessExitSpawn2
functions
The problem was that first argument klicensee was missing, therefore
shifting every other argument out of place and throwing an access
violation at the end.
* Use npDrmIsAvailable on sceNpDrmProcessExitSpawn
Tries to decrypt DRM file with provided klicensee
* Implement sceNpDrmVerifyUpgradeLicense
Implements sceNpDrmVerifyUpgradeLicense / sceNpDrmVerifyUpgradeLicense2