mediatek: mt8183: protect 4GB~8GB dram memory
mediatek: mt8183: protect 4GB~8GB dram memory

The offset there is the virtual address space on the bus side (1-9GB for 8GB RAM),
and that emi_mpu_set_region_protection will translate to the physical memory space (0-8GB).

8GB is 33-bit (the memory bus width is 33-bit on this platform),
so 0x23FFFFFFFUL-EMI_PHY_OFFSET = 0x1_FFFF_FFFF.

Change-Id: I7be4759ed7546f7e15a5868b6f08988928c34075
Signed-off-by: Xi Chen <fe079ee46533b7cf4bf1115e879a16c5cec3e7dc@mediatek.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware