!752 arm64/mpam: modify mpam irq register error log

Merge Pull Request from: @lu-tiancheng97 
 
This patch aims to modify the mpam irq register error log.
MPAM interrupts are used to report error information and are non-functional interrupts.
The current interrupt number is set to the default value 0.
As a result, the device startup log contains the error indicating that the MPAM interrupt
registration fails, which is sensitive.
Therefore, the log level is changed to alarm. 
 
Link:https://gitee.com/openeuler/kernel/pulls/752

 

Reviewed-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>