PCI: layerscape: Correct syntax by changing comma to semicolon

Replace command with a semicolon to correct syntax and to prevent
potential unspecified behaviour and/or unintended side effects.

Related:
  https://lore.kernel.org/linux-pci/20201216131944.14990-1-zhengyongjun3@huawei.com/



Co-authored-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20210311033745.1547044-1-kw@linux.com


Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Roy Zang <roy.zang@nxp.com>