MAINTAINERS: Add ST's Remote Processor Driver to ARM/STI ARCHITECTURE

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 174e854..a47be8b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1648,6 +1648,7 @@
 F:	drivers/phy/phy-stih407-usb.c
 F:	drivers/phy/phy-stih41x-usb.c
 F:	drivers/pinctrl/pinctrl-st.c
+F:	drivers/remoteproc/st_remoteproc.c
 F:	drivers/reset/sti/
 F:	drivers/rtc/rtc-st-lpc.c
 F:	drivers/tty/serial/st-asc.c