MAINTAINERS: Include drivers subdirs for ARM PMU PROFILING AND DEBUGGING entry

Ensure that the ARM PMU PROFILING AND DEBUGGING maintainers are included
for the HiSilicon PMU driver.

Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1592392648-128331-1-git-send-email-john.garry@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 68f21d4..24f377f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1425,7 +1425,7 @@
 F:	arch/arm*/kernel/hw_breakpoint.c
 F:	arch/arm*/kernel/perf_*
 F:	arch/arm/oprofile/common.c
-F:	drivers/perf/*
+F:	drivers/perf/
 F:	include/linux/perf/arm_pmu.h
 
 ARM PORT