fix(cpus): workaround for Cortex-X3 erratum 3213672

Cortex-X3 erratum 3213672 is a Cat B erratum that applies to
r0p0, r1p0, r1p1 and r1p2. It is still open.

This erratum can be worked around by setting CPUACTLR_EL1[36]
before enabling icache.

SDEN Documentation:
https://developer.arm.com/documentation/SDEN-2055130/latest/

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: Ia1c03217f4e1816b4e8754a090cf5bc17546be40
3 files changed