Documentation: Chinese translation of Documentation/arm64/amu.rst

This is a Chinese translated version of Documentation/arm64/amu.rst

Signed-off-by: Bailu Lin <bailu.lin@vivo.com>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Link: https://lore.kernel.org/r/20200926025233.47214-1-bailu.lin@vivo.com


Signed-off-by: Jonathan Corbet <corbet@lwn.net>