ARM: mstar: Add machine for MStar/Sigmastar Armv7 SoCs

Initial support for the MStar/Sigmastar Armv7 based IP camera
and dashcam SoCs.

These chips are interesting in that they contain a Cortex-A7,
peripherals and system memory in a single tiny QFN package that
can be hand soldered allowing almost anyone to embed Linux
in their projects.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/mach-mstar/Kconfig b/arch/arm/mach-mstar/Kconfig
new file mode 100644
index 0000000..52744fe
--- /dev/null
+++ b/arch/arm/mach-mstar/Kconfig
@@ -0,0 +1,26 @@
+menuconfig ARCH_MSTARV7
+	bool "MStar/Sigmastar Armv7 SoC Support"
+	depends on ARCH_MULTI_V7
+	select ARM_GIC
+	select ARM_HEAVY_MB
+	help
+	  Support for newer MStar/Sigmastar SoC families that are
+	  based on Armv7 cores like the Cortex A7 and share the same
+	  basic hardware like the infinity and mercury series.
+
+if ARCH_MSTARV7
+
+config MACH_INFINITY
+	bool "MStar/Sigmastar infinity SoC support"
+	default ARCH_MSTARV7
+	help
+	  Support for MStar/Sigmastar infinity IP camera SoCs.
+
+config MACH_MERCURY
+	bool "MStar/Sigmastar mercury SoC support"
+	default ARCH_MSTARV7
+	help
+	  Support for MStar/Sigmastar mercury dash camera SoCs.
+	  Note that older Mercury2 SoCs are ARM9 based and not supported.
+
+endif