arm/arm64: KVM: Add smccc accessors to PSCI code

Instead of open coding the accesses to the various registers,
let's add explicit SMCCC accessors.

Reviewed-by: Christoffer Dall <[email protected]>
Tested-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
1 file changed