MAINTAINERS: add maintainers for DesignWare PCIe PMU driver

Add maintainers for Synopsys DesignWare PCIe PMU driver and driver
document.

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Link: https://lore.kernel.org/r/20231208025652.87192-6-xueshuai@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>

Author: axiqia

MAINTAINERS

@@ -21090,6 +21090,13 @@ L:	linux-mmc@vger.kernel.org
 S:	Maintained
 F:	drivers/mmc/host/dw_mmc*
 
+SYNOPSYS DESIGNWARE PCIE PMU DRIVER
+M:	Shuai Xue <xueshuai@linux.alibaba.com>
+M:	Jing Zhang <renyu.zj@linux.alibaba.com>
+S:	Supported
+F:	Documentation/admin-guide/perf/dwc_pcie_pmu.rst
+F:	drivers/perf/dwc_pcie_pmu.c
+
 SYNOPSYS HSDK RESET CONTROLLER DRIVER
 M:	Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
 S:	Supported