dev-arm: Fix WalkCache stats

The WalkCache stats are wrongly using the legacy framework.
With this patch we are registering those to the hierarchical structure.

As we need to pass the Stats::Group parent at construction time,
we are replacing 2d arrays with Vector2d for count stats and using a flat
vector of pointers for the Formula stats

Signed-off-by: Giacomo Travaglini <>
Change-Id: I8992bc262a376e4e81a4d608c11dff6902e0a01d
Maintainer: Jason Lowe-Power <>
Reviewed-by: Jason Lowe-Power <>
Tested-by: kokoro <>
2 files changed