Hide intel GPU generated event row when we don't have any
Hide intel GPU generated event row when we don't have any

Having this empty row for captures done on AMD or when i915-perf
support disabled doesn't make sense.

Signed-off-by: Lionel Landwerlin <9463032a5b99ffad10f36631678a833369a311b5@intel.com>

mikesart/gpuvis,mikesart/gpuvis,mikesart/gpuvis