ARM: Check ARCH_MULTI_V7 to differentiate ARMv5/v7 Allwinner SoCs

Allwinner also has some ARMv5 SoCs.

In order to add support for them, check ARM_MULTI_V7 before enabling
ARMv7 SoC's. Add help text for ARCH_SUNXI menuconfig.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/mach-sunxi/Kconfig

@@ -9,9 +9,13 @@ menuconfig ARCH_SUNXI
 	select PM_OPP
 	select SUN4I_TIMER
 	select RESET_CONTROLLER
+	help
+	  Support for Allwinner ARM-based family of processors
 
 if ARCH_SUNXI
 
+if ARCH_MULTI_V7
+
 config MACH_SUN4I
 	bool "Allwinner A10 (sun4i) SoCs support"
 	default ARCH_SUNXI
@@ -56,3 +60,5 @@ config ARCH_SUNXI_MC_SMP
 	select ARM_CPU_SUSPEND
 
 endif
+
+endif