tree 011225d51b8820de2c395198bd5dbb793a639524
parent 0d3b051adbb72ed81956447d0d1e54d5943ee6f5
author Guo Ren <guoren@linux.alibaba.com> 1611134517 +0800
committer Guo Ren <guoren@linux.alibaba.com> 1614414909 +0800

csky: Fixup pfn_valid error with wrong max_mapnr

The max_mapnr is the number of PFNs, not absolute PFN offset.
Using set_max_mapnr API instead of setting the value directly.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>