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- Migrate to new GIC interfaces.
- Migrate to bl31_early_platform_setup2().
- Remove references to removed build options.

Change-Id: Ia7c63f75325ea4b41e32a9de3f01b0007d0ae210
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

tf_printf and tf_snprintf are now called printf and snprintf, so the
code needs to be updated.

Change-Id: Iffeee97afcd6328c4c2d30830d4923b964682d71
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Also change header guards to fix defects of MISRA C-2012 Rule 21.1.

Change-Id: Ied0d4b0e557ef6119ab669d106d2ac5d99620c57
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Add domain suspend/resume support, Linux kernel
can "echo mem > /sys/power/state" to put system
into suspend mode, all CPUs and cluster will be
powered off and can be waked up if irq pending
in GIC, tested on i.MX8QM MEK board.

Since the power state has been implemented, switch
to use standard power state for CCI operations
instead of private cpu use count in i.MX8QM.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Add domain off support for Linux kernel's cpu
hot-plug feature, when there are cpu off request
from Linux kernel, TF-A will send command to
system controller to do CPU power gate accordingly,
tested on i.MX8QM MEK board.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Add system reset support for i.MX8QM,
when Linux kernel issues "reboot" command,
TF-A will send command to inform system
controller to reset whole board according
to board design, tested on i.MX8QM MEK board.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Add system power off support for i.MX8QM,
when Linux kernel issues "poweroff" command,
TF-A will send command to inform system
controller to power off whole board according
to board design, tested on i.MX8QM MEK board.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

NXP's i.MX8QM is an ARMv8 SoC with 2 clusters, 2 Cortex-A72
cores in one cluster and 4 Cortex-A53 in the other cluster,
and also has system controller (Cortex-M4) inside, documentation
can be found in below link:

https://www.nxp.com/products/processors-and-microcontrollers/


applications-processors/i.mx-applications-processors/i.mx-8-processors:IMX8-SERIES

This patch adds support for booting up SMP linux kernel (v4.9).
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>