Enable translating of libpfm4 user/kernel/hypervisor modifiers to raw event code syntax
If a user specifies an event code with ":u=<n>", ":k=<n>", or
":h=<n>" modifiers, evt2raw will now output a raw event code
which is compatible with "perf stat" and "perf record". For
example, it will translate:
Without this change, the u,k, and h modifiers are simply dropped
silently by evt2raw.
Note that in order for this to work correctly, I had to change
the default privilege mask to add hypervisor mode.