The AM2x family of K3 SoCs typically do not contain a Cortex-A53 or
A72 processor. So, make the cpu "up" functions available when armv8
processor count > 0.
Change-Id: I985b194fe7cc63e4134ad84ccd921cc456eb412f
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7944
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>