ANDROID: KVM: arm64: Move hyp events in a hyp/ folder

Align with the host tracing events by adding another layer in the event
path. As no group exists at the moment, move all of them in a common
hyp/ one.

Bug: 249050813
Change-Id: I4c77d1ec676f896bba77f147e0a4b30bc9c92606
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>