Hardware setup code

Since arm-trusted-firmware is the first software to run after RESET, a minimal set of peripherals need to be configured and used.

Some required configurations are as follows:

PFC: For pin control setting to change from default GPIO pins to peripheral pins
DBSC4, AXI: For memory DDR setting, and QoS setting
GPIO, I2C: For controlling PMIC
SCIF: For output message to debug serial
WDT: If timeout detection is being used
CPG: For enabling above modules
SPI: If the bootloader images are stored in SPI flash
SDHI, MMC: If the bootloader images are stored in SD card or eMMC.

Updating TF-A on Your Board