refactor(stm32mp1): drop the "st,stm32-nvmem-layout" node

Simplify the DT parsing by removing the parsing of the nvmem layout node
with "st,stm32-nvmem-layout" compatible.

The expected OTP NAME can directly be found in a sub-node named
NAME@ADDRESS of the BSEC node, the NVMEM provider node.

This patch also removes this specific binding introduced for TF-A.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Ic703385fad1bec5bef1cee583fbe9fbbf6aea216
2 files changed