feat(st): add stm32mp_is_wakeup_from_standby()

This function is used to know if this is a return from Standby mode,
and the DDR was in self-refresh, allowing a correct return to OS.
They just return false for the moment.

Change-Id: Ie7de9a9f6477f8158e144f6626070a77fdc53ceb
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
3 files changed