MAINTAINERS: add maintainers for Alibaba' T-Head PMU driver

Add maintainers for Alibaba PMU document and driver

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220818031822.38415-4-xueshuai@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>

MAINTAINERS

@@ -749,6 +749,12 @@ S:	Supported
 F:	drivers/infiniband/hw/erdma
 F:	include/uapi/rdma/erdma-abi.h
 
+ALIBABA PMU DRIVER
+M:	Shuai Xue <xueshuai@linux.alibaba.com>
+S:	Supported
+F:	Documentation/admin-guide/perf/alibaba_pmu.rst
+F:	drivers/perf/alibaba_uncore_dwr_pmu.c
+
 ALIENWARE WMI DRIVER
 L:	Dell.Client.Kernel@dell.com
 S:	Maintained