platform: msm8996: Update the mmu table based on v5 memory map

memory region for PIL has increased for v5 memory maps, so move the
address used by LK out of PIL region. Add read only access flag and mark
the memory that gets mapped during download mode to be read only.

Change-Id: Icbbf953506907a1e1b7c03cc6964c9bff2fa4dbc
4 files changed