hw: Move PL031 device from hw/timer/ to hw/rtc/ subdirectory

The PL031 is a Real Time Clock, not a timer.
Move it under the hw/rtc/ subdirectory.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20191003230404.19384-3-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/MAINTAINERS b/MAINTAINERS
index ed41d7d..2e13ba4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -495,8 +495,8 @@
 F: hw/sd/pl181.c
 F: hw/ssi/pl022.c
 F: include/hw/ssi/pl022.h
-F: hw/timer/pl031.c
-F: include/hw/timer/pl031.h
+F: hw/rtc/pl031.c
+F: include/hw/rtc/pl031.h
 F: include/hw/arm/primecell.h
 F: hw/timer/cmsdk-apb-timer.c
 F: include/hw/timer/cmsdk-apb-timer.h