arm/armv8-r: init HSCTLR and HACTLR for EL2

[anchao]

Summary

arm/armv8-r: init HSCTLR and HACTLR for EL2

1. init HSCTLR to enable i-cache/d-cache for EL2
2. init HACTLR to enable all access to implementation defined registers for EL1.
3. add dsb/isb before switch to EL1 from EL2

Signed-off-by: Jinliang Li [email protected]

Impact

N/A

Testing

Cortex-R52