forked from Mirrors/opensbi

The serial driver regions used by OpenSBI should be marked as a shared read-write regions between M-mode and SU-mode as those are accessed by earlycon and the corresponding tty serial drivers running in 'S' mode. When the smepmp extension is enabled, PMP entries for these shared regions will get programmed. Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com>