KVM: arm64: Make vcpu_{read,write}_sys_reg available to HYP code

Allow vcpu_{read,write}_sys_reg() to be called from EL2 so that nVHE hyp
code can reuse existing helper functions for operations such as
resetting the vCPU state.

Change-Id: I45b58887cacd6a6fc32eed977c440804f82b5625
Signed-off-by: Fuad Tabba <tabba@google.com>
3 files changed