feat(stm32mp2): introduce DDR type compilation flags

Binary size limitation implies to define DDR type build flags.
User must set one single type in the build command line.
DDR_TYPE is then deduced, and will help in relative definitions.
A check routine is implemented to verify correct configuration.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: I87d0a492196efea33831d9c090e6e434cc7c0a1e
1 file changed