MAINTAINERS: Add the LPC Clocksource to STi maintained driver list

Signed-off-by: Lee Jones <lee.jones@linaro.org>

MAINTAINERS

@@ -1503,6 +1503,7 @@ S:	Maintained
 F:	arch/arm/mach-sti/
 F:	arch/arm/boot/dts/sti*
 F:	drivers/clocksource/arm_global_timer.c
+F:	drivers/clocksource/clksrc_st_lpc.c
 F:	drivers/i2c/busses/i2c-st.c
 F:	drivers/media/rc/st_rc.c
 F:	drivers/mmc/host/sdhci-st.c