gpu-compute: Refactor some Event subclasses to lambdas

Change-Id: Ic1332b8e8ba0afacbe591c80f4d06afbf5f04bd9
Signed-off-by: Sean Wilson <spwilson2@wisc.edu>
Reviewed-on: https://gem5-review.googlesource.com/3922
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
8 files changed