Change the minimum mode allowed for L2J from low power mode (LPM) to
retention mode. This can be used to ensure that power is saved once
the secure processor is out of reset.
Change-Id: I2b6b7c88b3ea9cc1f2105ff4999d44b96e0b7aeb
Signed-off-by: David Collins <quic_collinsd@quicinc.com>