feat(stm32mp2): add ddr-fw parameter for fiptool

When generating fiptool for STM32MP2, a new parameter is added to
put DDR firmware inside the FIP.

To avoid duplicating fiptool platform files, move
tools/fiptool/plat_fiptool/st/stm32mp1 files in their parent directory
and move plat_def_fip_uuid.h in in plat/st/common/include.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I1dd796847869e2bfb6ee8c2bcef25c595fa5197a
4 files changed