Add NXP's i.MX8 SoCs system controller console support

NXP's i.MX8 SoCs with system controller inside support outputting
debug message to system controller's console via calling SCFW API,
since TF-A shares debug console with Linux kernel which will have
confliction if Linux kernel and TF-A's console are both enabled,
this patch adds support for switching TF-A debug console to system
controller to easy TF-A debug.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
4 files changed