Add DeviceTree bindings for Open Profile for DICE, an open protocol for measured boot. Firmware uses DICE to measure the hardware/software combination and generates Compound Device Identifier (CDI) certificates. These are stored in memory and the buffer is described in the DT as a reserved memory region compatible with 'google,open-dice'. 'no-map' is required to ensure the memory region is never treated by the kernel as system memory. Bug: 198197082 Signed-off-by: David Brazdil <dbrazdil@google.com> Link: https://lore.kernel.org/r/20220126231237.529308-2-dbrazdil@google.com Change-Id: I6da35b90ca2f519408f96edf3999ffb257cf72e8 (cherry picked from commit 630c8e8d356745ebda5736da72c5734806de2c87)