fix(cpus): workaround for Cortex-A720 erratum 2940794

Cortex-A720 erratum 2940794 is a Cat B erratum that is present
in revision r0p0, r0p1 and is fixed in r0p2.

The workaround is to set bit[37] of the CPUACTLR2_EL1 to 1.

SDEN documentation:
https://developer.arm.com/documentation/SDEN2439421/latest

Change-Id: I1488802e0ec7c16349c9633bb45de4d0e1faa9ad
Signed-off-by: Bipin Ravi <biprav01@u203721.austin.arm.com>
4 files changed