soc/imgtec/pistachio: Implement hard_reset()

Verified boot needs hard_reset() now, so offer a dummy implementation
for the Imagination chip. Sorry, I don't have the specs for this chip
anymore to make a real implementation, but I would like to keep this
code from bit rotting.

Change-Id: I15aa47f7d248b99901a2ac0e65a46b43d7718717
Signed-off-by: Stefan Reinauer <>
Tested-by: build bot (Jenkins)
Reviewed-by: Vadim Bendebury <>
3 files changed