ARM: STi: Update platform level menuconfig 'help'

Encompass newer STiH4{07,10} and STiH418 SoC based platforms.

Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>

arch/arm/mach-sti/Kconfig

@@ -18,11 +18,10 @@ menuconfig ARCH_STI
 	select PL310_ERRATA_769419 if CACHE_L2X0
 	select RESET_CONTROLLER
 	help
-	  Include support for STiH41x SOCs like STiH415/416 using the device tree
-	  for discovery
-	  More information at Documentation/arm/STiH41x and
-	  at Documentation/devicetree
-
+	  Include support for STMicroelectronics' STiH415/416, STiH407/10 and
+	  STiH418 family SoCs using the Device Tree for discovery.  More
+	  information can be found in Documentation/arm/sti/ and
+	  Documentation/devicetree.
 
 if ARCH_STI