The __ref annotation for exynos_cpu_die() is not needed because the
function does not reference any __init/__exit symbol or call.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>