MAINTAINERS: update entry for ARM STI

Add STi drivers/include files and git tree.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

MAINTAINERS

@@ -329,8 +329,21 @@ F:	drivers/usb/host/ehci-msm.c
 ARM STI
 M:	Patrice Chotard <patrice.chotard@st.com>
 S:	Maintained
+T:	git https://gitlab.denx.de/u-boot/custodians/u-boot-stm.git
 F:	arch/arm/mach-sti/
 F:	arch/arm/include/asm/arch-sti*/
+F:	drivers/phy/sti_usb_phy.c
+F:	drivers/pinctrl/pinctrl-sti.c
+F:	drivers/mmc/sti_sdhci.c
+F:	drivers/reset/sti-reset.c
+F:	drivers/serial/serial_sti_asc.c
+F:	drivers/sysreset/sysreset_sti.c
+F:	drivers/timer/sti-timer.c
+F:	drivers/usb/host/dwc3-sti-glue.c
+F:	include/dwc3-sti-glue.h
+F:	include/dt-bindings/clock/stih407-clks.h
+F:	include/dt-bindings/clock/stih410-clks.h
+F:	include/dt-bindings/reset/stih407-resets.h
 
 ARM STM SPEAR
 #M:	Vipin Kumar <vipin.kumar@st.com>