Thanks to FIP and FCONF management, remove all static
management between OPTEE and SP_MIN monitor. All binaries
except the firmware config are defined as skip. They will be
added according to the firmware configuration parsing. The same
BL2 can be used with the FIP whatever the defined monitor.
Adapt also the load sequence for standby boot.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I94ea1d29e3f0604f2790853db397411b6d516108