KVM: arm64: make the hyp vector table entries local

Make the hyp vector table entries local functions so they
are not accidentally referred to outside of this file.

Using SYM_CODE_START_LOCAL matches the other vector tables (in hyp-stub.S,
hibernate-asm.S and entry.S)

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210222164956.43514-1-joey.gouly@arm.com


Signed-off-by: Will Deacon <will@kernel.org>